I really enjoyed this game and I can say I have spent maybe way too much time with it. However right now the game has a lot of screwed up mechanics that make it a pain to play. I will list the mechanics/bugs which are most relevant, explain why they are hampering fun and if possible make a suggestion. After all I like this game way too much and hope improvements are ahead. I would also appreciate if you had any suggestions to make the game more fun and add more lategame incentives.
1 Expanding via vassals: Unfortunately the only way to play the game unless you want to play in semi-observe mode after the early game. This is mainly due to coalition mechanics.
2 Coalition mechanics: On hard-difficulty taking 2 provinces guarantees a hostile coalition unless a) you are allied with all surrounding neighbours or b) you fought against a nation without neighbours. Taking 1 province out of the HRE mostly does the same after rejecting "unjustified demands" from the emperor.
--> 1st you kinda have to vassal feed or you will grow a huge coalition if you want to expand. 2nd it forces a player who does not want to exploit game mechanics to... wait. On the bright side this leads to a more historical gameplay. On the other hand it forces the player to... wait. Waiting is no fun.
Suggestion: Reduce Aggressive expansion penalties drastically. Let's assume AE was halved, you could still conquer your way into a hostile coalition with ease. However getting coalitions after 1-2 provinces seems just exaggerated in terms of gameplay.
3 Vanishing cores: I will not go into too much detail since this is being constantly discussed. However after the hotfix it's even worse for the player basically due to extreme buginess. For example the cores of Styria should not expire before the end of the game since they are the same culture as Austria (1944). However they will expire in 1644. Furthermore if you take one styrian province and release it as a vassal all it's remaining cores will vanish before 1544 immediately. When it comes to vassal feeding, this basically means that expansion following this path are all effectively shortened by 50 years. Another problem is that a lot of cores will vanish in reference to the starting date of your game. For example if the Burgundy-event fires in 1499, all cores outside the French culture group are gone from one day to the next, although the owner change should trigger. There is more but as said I don't want to go into too much detail.
--> For the player this means 1st: The tooltips are still extremely confusing. 2nd: Expanding via vassals can only be done in a shorter timeframe. 3rd: After the mid game there is nothing left except for huge coalitions or some colonizing. Both of which are no fun unless you really want to push yourself to a world conquest in the most painful way.
suggestion: It can't be too hard to write a decent tooltip, seriously. // Just leave the cores. Players WANT to conquer. It's fun. So why not just let them? A worldconquest in 1.0 was hard enough. If you don't go for a WC all you can do is go into semi-observe mode after you have 100+ provinces since AE scales ridicolously.
4 Personal Unions: Just super random and basically impossible for the player unless you get extremely lucky or start in Iberia. The main problem is that there is no good way to counter them. Right now the only thing you can do in order to stop a personal union is to beat up the overlord to -100 prestige and hope for their king to die before the country recovers.
--> A game can be truly ruined when an AI stacks up PUs. For example I have seen a Castille/Portugal/Aragon/Naples/Austria/Palatinate PU. I mean its not the end of the game, but that kind of superblob can lead to a total standstill of the map. Combined with the vanishing cores this part of the map is basically locked forever.
suggeston: 1st add a casus belli for breaking up personal unions. 2nd make PUs accessible to the player again. PUs in 1.0 where absolutely fine. So a player can become superpowerful. So what? There have to be some big gains. After conquering myself up to ~100 forcelimits there should be some wars that are worth fighting for. 3 add the option to join a defensive PU war if you have a RM or if you have the same dynasty regardless of alliance. The claim throne succession war does not work at all, since no sane person (and not even the AI) will claim all thrones, especially in the (normal) case where you have no chance to inherit it.
5 Lack of flavour (missions and events): After your initial missions I find myself repeating the "fortify province X" mission until I just ignore them. Flavour events just happen or they don't given certain triggers. However they are very scarce
suggestion: This one is more of a wish. It would be great to have a wider variety of missions such as "raid Muscovy" for 10% of their annual income. // It would be great if there were more flavour events. Especially those which have a sequence of decisions such as religious turmoil. Also why not add some minor generic event sequences? Crusader King 2 has hunting/ feasting which can entertain you in peace times as well as give minor buffs.
6 Other stuff:
-My game is up to date but I still get AE from integrating vassals.. So even with vassal feeding you have coalitions non-stop which again hampers any expansion.
-Vassal attachement: Please add an option to tell them to attach/skirmish/hunt/siege. In wars I am constantly trying to avoid vassal-attrition. Since attrition can be extremely high army composition just doesn't matter at all. It's all just about avoiding attrition.
6 Summary: After you established your base in the early game, and afterwards you vassal fed yourself into a major power there is simply nothing left to do unless you are a coalition-masochist. In EU 4 you basically have only 1 option: Fight over provinces. And currently the game is designed to make this as hard, painful, low-rewarding, and slow as possible. I don't have a problem in it being hard, I don't have a problem it being painful, or low-rewarding, or slow. But all of them at once..?
After so much criticism I also want to mention a change in 1.3 that I really liked. Apart from the attaching vassals everything around the combat system is a huge improvement to before.
1 Expanding via vassals: Unfortunately the only way to play the game unless you want to play in semi-observe mode after the early game. This is mainly due to coalition mechanics.
2 Coalition mechanics: On hard-difficulty taking 2 provinces guarantees a hostile coalition unless a) you are allied with all surrounding neighbours or b) you fought against a nation without neighbours. Taking 1 province out of the HRE mostly does the same after rejecting "unjustified demands" from the emperor.
--> 1st you kinda have to vassal feed or you will grow a huge coalition if you want to expand. 2nd it forces a player who does not want to exploit game mechanics to... wait. On the bright side this leads to a more historical gameplay. On the other hand it forces the player to... wait. Waiting is no fun.
Suggestion: Reduce Aggressive expansion penalties drastically. Let's assume AE was halved, you could still conquer your way into a hostile coalition with ease. However getting coalitions after 1-2 provinces seems just exaggerated in terms of gameplay.
3 Vanishing cores: I will not go into too much detail since this is being constantly discussed. However after the hotfix it's even worse for the player basically due to extreme buginess. For example the cores of Styria should not expire before the end of the game since they are the same culture as Austria (1944). However they will expire in 1644. Furthermore if you take one styrian province and release it as a vassal all it's remaining cores will vanish before 1544 immediately. When it comes to vassal feeding, this basically means that expansion following this path are all effectively shortened by 50 years. Another problem is that a lot of cores will vanish in reference to the starting date of your game. For example if the Burgundy-event fires in 1499, all cores outside the French culture group are gone from one day to the next, although the owner change should trigger. There is more but as said I don't want to go into too much detail.
--> For the player this means 1st: The tooltips are still extremely confusing. 2nd: Expanding via vassals can only be done in a shorter timeframe. 3rd: After the mid game there is nothing left except for huge coalitions or some colonizing. Both of which are no fun unless you really want to push yourself to a world conquest in the most painful way.
suggestion: It can't be too hard to write a decent tooltip, seriously. // Just leave the cores. Players WANT to conquer. It's fun. So why not just let them? A worldconquest in 1.0 was hard enough. If you don't go for a WC all you can do is go into semi-observe mode after you have 100+ provinces since AE scales ridicolously.
4 Personal Unions: Just super random and basically impossible for the player unless you get extremely lucky or start in Iberia. The main problem is that there is no good way to counter them. Right now the only thing you can do in order to stop a personal union is to beat up the overlord to -100 prestige and hope for their king to die before the country recovers.
--> A game can be truly ruined when an AI stacks up PUs. For example I have seen a Castille/Portugal/Aragon/Naples/Austria/Palatinate PU. I mean its not the end of the game, but that kind of superblob can lead to a total standstill of the map. Combined with the vanishing cores this part of the map is basically locked forever.
suggeston: 1st add a casus belli for breaking up personal unions. 2nd make PUs accessible to the player again. PUs in 1.0 where absolutely fine. So a player can become superpowerful. So what? There have to be some big gains. After conquering myself up to ~100 forcelimits there should be some wars that are worth fighting for. 3 add the option to join a defensive PU war if you have a RM or if you have the same dynasty regardless of alliance. The claim throne succession war does not work at all, since no sane person (and not even the AI) will claim all thrones, especially in the (normal) case where you have no chance to inherit it.
5 Lack of flavour (missions and events): After your initial missions I find myself repeating the "fortify province X" mission until I just ignore them. Flavour events just happen or they don't given certain triggers. However they are very scarce
suggestion: This one is more of a wish. It would be great to have a wider variety of missions such as "raid Muscovy" for 10% of their annual income. // It would be great if there were more flavour events. Especially those which have a sequence of decisions such as religious turmoil. Also why not add some minor generic event sequences? Crusader King 2 has hunting/ feasting which can entertain you in peace times as well as give minor buffs.
6 Other stuff:
-My game is up to date but I still get AE from integrating vassals.. So even with vassal feeding you have coalitions non-stop which again hampers any expansion.
-Vassal attachement: Please add an option to tell them to attach/skirmish/hunt/siege. In wars I am constantly trying to avoid vassal-attrition. Since attrition can be extremely high army composition just doesn't matter at all. It's all just about avoiding attrition.
6 Summary: After you established your base in the early game, and afterwards you vassal fed yourself into a major power there is simply nothing left to do unless you are a coalition-masochist. In EU 4 you basically have only 1 option: Fight over provinces. And currently the game is designed to make this as hard, painful, low-rewarding, and slow as possible. I don't have a problem in it being hard, I don't have a problem it being painful, or low-rewarding, or slow. But all of them at once..?
After so much criticism I also want to mention a change in 1.3 that I really liked. Apart from the attaching vassals everything around the combat system is a huge improvement to before.