Yeah yeah, we know peace conference mechanic sucks. It creates border gore when AI decide Japan needs Sicily from Italy. Numerous puppet created with conflicting logic, such as East Germany, West Germany, German Reich co-existing. I know what is needed to fix majority of problem, and it should be very easy to implement.
Problem 1: Puppeting/Liberating is allowed on territory you dont own/your faction dont own.
Why: Normally there is a 10x score cost penalty applied when taking territory you do not control. However you can get around it by puppeting. You will see most of your land you took disappear if AI decide to puppet nation under your control, and they do not pay the 10x cost when feeding those puppet! Now you get nothing because AI took everything via puppeting.
Solution: Correctly apply the 10x cost penalty for puppeting land you do not own. For the most part you should not touch the land your army didnt touch.
Problem 2: When accounting the territory control for 10x penalty, faction member can take from each other without penalty.
Why: Despite in the same faction, country should not able to land other country control. For example, PRC and China both have core on the territory they took from Japan. It makes no sense PRC would give up the land they occupied to Republic of China easily.
Solution: There is already a define adjusting cost multiplier when controled by faction member, currently at 0.5 for some odd reason. It means AI actually prefers taking land they do not control over what they control as they get a bonus instead of penalty. That is straight up silly and multiplier should be 5x instead. That is what I did in my personal mod.
Problem 1: Puppeting/Liberating is allowed on territory you dont own/your faction dont own.
Why: Normally there is a 10x score cost penalty applied when taking territory you do not control. However you can get around it by puppeting. You will see most of your land you took disappear if AI decide to puppet nation under your control, and they do not pay the 10x cost when feeding those puppet! Now you get nothing because AI took everything via puppeting.
Solution: Correctly apply the 10x cost penalty for puppeting land you do not own. For the most part you should not touch the land your army didnt touch.
Problem 2: When accounting the territory control for 10x penalty, faction member can take from each other without penalty.
Why: Despite in the same faction, country should not able to land other country control. For example, PRC and China both have core on the territory they took from Japan. It makes no sense PRC would give up the land they occupied to Republic of China easily.
Solution: There is already a define adjusting cost multiplier when controled by faction member, currently at 0.5 for some odd reason. It means AI actually prefers taking land they do not control over what they control as they get a bonus instead of penalty. That is straight up silly and multiplier should be 5x instead. That is what I did in my personal mod.