All the AI's operate using the same bot mechanics as far as I am aware. Adding additional bot types would be nice, but that requires a very large overhaul.
Very large overhaul, seriously ?? I'm not a coder at all, but is it so complicated to add a condition such as :
"if number of vassals = max vassals limit - 10 ; increase centralization ". This way big blobs which are near there vassals limit would not increase their centralization, on the contrary to kingdoms with 5/30 vassals which could increase it. I suggested the -10 so that it would not be likely for IA to be over its limit and suffer the condequnces.
Additionally the AI doesn't increase taxes. It doesn't affect any laws other than tribal and CA. Since everything else to optimised to work with the set basics. If you go and change an AIs laws, it will not go and change them.
What is your point here ? Don't touch anything, all is WAD ? Clearly not, AI should always tend to squeeze as much gold and troops from their vassals, as long they are happy (i.e. no factions).
Yes if they have 20 spare vassal limit spaces, increasing centralisation, could allow them to hold more land, but when they increase in rank, they would only then lower it to allow for more vassals. Overall making no real difference to previous rank. All centralisation does is allow for more personal demesne, which for the AI isn't really important.
Not really important, again ?? Sesiously AI is trash in this game, and preventing them from increasing centralization make them even poorer. With a small demesne, all they have is a small income and ridiculously small personal levies, which means they can't build as much buildings as they could, they tend to be the target of many civil wars, they cannot send gift to their vassals to make them happier... Besides, unless it has an empire title, I almost never see AI grow big in most of my games, so I highly doubt they would have to decrease their centralization. Ever.
For instance, 99 time out of 100 Kings never marry highborn princess, they will pick a random lowborn imbecile lunatic amateurish plotter girl, who will not grant interesting claims to her children. That's one of the reasons why in my games, during roughtly 300 years, K_England would keeps its de jure border, with a vassals limit not even close from half.....
Adding centralisation checks to the AI's code would then need to be added, increasing daily computations, as to whether or not to change laws. You would then also need to add calculations to optimise the AI at every interval of its growth with every law. Which would than further increase computations. At what point do you stopp adding these? Do not forget that each computation needs to be done for every AI in the game, including vassals. Although an AI overhaul has been suggested for the future, such changes here could lead to detrimental effects on game performance.
Again, a bigger demesne for both Dukes/Kings means less count-tier characters. Which is not bad at all and might even increase game speed eventually, thanks to less courtiers and less interactions.
Moreover I think it could balance the game quite a bit, between Kingdoms and Empires : an Emperor would have to rely more on his vassals to get troops and income because of his low centralization, while on the contrary small/medium kingdoms/dukedoms, with their high centralization and their better income could benefit of it and be a decent threat to Empires. It's always easier to manage something small you know, and if you grow too big, you will have corruption everywhere, less tax efficiency, less control over your vassals, etc, basically what happened to the huge Roman Empire blob.
