We should have an Infamy system just like in Vic2, and if your Infamy goes over 20 you would get coallition'ed by other countries, Infamy would work depending on ideologies, meaning that if you declare war on a Tribal state you dont get much infamy, but if you declare war on a civilized (monarchy, democracy, republic, facist, communist) state you get more infamy than what youd get by declaring on a tribe. I also think that turning, communist/facist should give you some infamy, switching ideologies should have a delay of 50-70 turns and that democracies, republics, and monarchies should burn infamy faster than the other ideologies.
Well then? That only makes Democracies, Republics and Monarchies OP doesnt it?
Well I think that if you're a republic or a democracy you shouldn't be able to declare war on someone unless you have a relationship of -50 or less with then.
Monarchies should be able to declare wars whenever they want however they burn Infamy a bit slower than the democracies and republics (slower by -25%)
In the End the Infamy burning system should look like this
Declaring War: +5 Infamy
Infamy Burn per Turn: -0.25 Infamy
Declaring War: +6 Infamy
Infamy Burn per Turn: -0.35 Infamy
Declaring War: +6.5 Infamy (If there is no Democratic/Republican Great Power in their Continent) +8 Infamy + Diplomatic Relations Suspended with Non-Facist neighbours (if there is democratic great power in continent)
Infamy Burn per Turn: -0.2 Infamy per turn
Declaring War: +7 Infamy + Diplomatic Relations suspended with Non-Communist Neighbors (unless non-communist neighbors have relations above +25 or have non-agression pact)
Infamy Burn per Minute: -0.16 Infamy per Turn
Declaring War: +0.5 Infamy (if war declared against another tribe) +10 Infamy (If war declared against all other governments)
Infamy Burn per Minute: -0.6 Infamy per Turn
Declaring War: +2 Infamy (if war declared on tribes) +7 Infamy (if declared against other governments)
City State government would work like a Monarchy.
but for now I think that the most important thing that should be added to the Game is BETTER AI
at the moment the AI will accept any trade request for declaring war on someone (if their ally or lord) as long as they are offered money for it.
the AI also never forms alliances (i've only seen it form once)