Wild Suggestion:
Have some situational diplomatic bonuses and maluses (declared war, negotiated a trade embargo, spy causing trouble, fair and fortright trades etc.) not only decay over time but also be tied to the civilization's form of government. I'm thinking situations where you've subdued your rival and installed a puppet leader (like forcing your own civics on them) or doing an espionage mission to start a coup (change civic espionage mission) to install a friendly regime. For example Nazi Germany invading France and forcing Fascist civics on them would be reflected so that the negative maluses from declaring war are negated because you've installed a "friendly puppet leader" in charge. In the previous example it'd make sense that the leaders of French Republic would hold grudge over the war while the French Fascists would be sympathetic as they gained power as a result and share a similar ideology with Nazi Germany. Could also make it possible for the US to go on a crusade to "spread democracy" around the world? And speaking of crusades, maybe this mechanic could also work similarly with state religions?
Obviously my suggestion is very much roleplay driven and I've not given much thought about the gameplay part but heck, this is the suggestions thread afterall!
Have some situational diplomatic bonuses and maluses (declared war, negotiated a trade embargo, spy causing trouble, fair and fortright trades etc.) not only decay over time but also be tied to the civilization's form of government. I'm thinking situations where you've subdued your rival and installed a puppet leader (like forcing your own civics on them) or doing an espionage mission to start a coup (change civic espionage mission) to install a friendly regime. For example Nazi Germany invading France and forcing Fascist civics on them would be reflected so that the negative maluses from declaring war are negated because you've installed a "friendly puppet leader" in charge. In the previous example it'd make sense that the leaders of French Republic would hold grudge over the war while the French Fascists would be sympathetic as they gained power as a result and share a similar ideology with Nazi Germany. Could also make it possible for the US to go on a crusade to "spread democracy" around the world? And speaking of crusades, maybe this mechanic could also work similarly with state religions?
Obviously my suggestion is very much roleplay driven and I've not given much thought about the gameplay part but heck, this is the suggestions thread afterall!