First of all, I have 1100 hours in this game, so I know where I'm stepping.
I have already spent a small fortune purchasing every single Crusader Kings 2 and Europa Universalis IV DLC there is. I just can't understand why all of those hadn't been already included in the initial release or even as free patches. Paradox is really getting on my nerves with these incredibly overpriced "expansions". They add a few stuff to the game, but it still "feels" the same. And why the hell isn't the "content pack" included in the main DLC purchase anyway?
Common Sense just made EU4 static.
1. Coring provinces is extremely expensive. The new development system just made it virtually impossible to expand. Claims now only give you a 10% reduction. World Conquer, Jihad, Rajput Reich and Norwegian Wood achievements now seem undoable.
2. Fort system. It started out as a good idea: not all of your provinces will start out with forts, so you have to build them (for a hefty 200g) and it has a monthly maintenance cost. Provinces that don't have forts will be rendered occupied within a month of siege. Forts lock opponent movement, so it's harder to plan ahead (conserving manpower, joining a battle). Supply limits are troublesome.
Rebels are also a problem. If you get 15 unrest for nationalism (it's now called separatism), as soon as they spawn, they will almost instantly occupy the province and give you a further 10 years. Reactionaries will slow westernization within a glimpse and Religious Zealots can possibly convert half your country if your troops are just too far away.
3. Suicidal AI? Started as France to get a "feel" of the DLC and, even though allied to half of Europe, Burgundy insisted on attacking me solo.
4. Development system. Those weak, poor provinces can now be upgraded into something more robust. You have to spend Monarch Points to do so, but it's so extremely expensive, it's almost unworthy. Spending 100 Administrative Points for +1 base tax is just unreal. Also, you'd have to save all of those for coring.
To me, the whole point of playing an One Province Minor (OPM) is expanding and conquering. Why on Earth would I just sit around trying to upgrade my capital?
And I could just go on...
I really feel like I should have every single DLC on when I play EU4, as I love the game. But this one just felt awful.