Hello hello!
First time posting here, and I'm not sure if something I'm giving feedback on have already been discussed here, If so, I apologize!
I love playing this mod, seeing civilizations rise and fall and enjoying the dynamics of the game. I don't play at a very high difficulty setting, I usually use flexible difficulty prince-emperor for the most part. I do not know if my difficulty setting are related to the feedback I'm giving, but I don't think it is.
Some general feedback and things that I find to be weird:
Civics. The AI absolutely loves monarchy, patrician, coinage/guilds and later on federal and volunteer army to such a degree that they don't choose anything else, even if the leader for example have a favorite civic of despotism. I have no idea why this is. Ive played numerous games from ancient - modern and the trend is clear. They all rush for monarchy and then they all use monarchy until they get to rifling when they all switch to federal. This is quite boring and it feels like the AI is power-gaming. The categories where the AI players differ the most is religion and welfare, they use almost all the available civics which feels fun. The AI never use civics which disables foreign trade routes.
Unhealthiness. At the beginning of the industrial era you get access to a load of buildings who give a rather significant unhealthiness penalty. The AI don't seem to mind the unhealthiness though and usually shrinks his cities down to maybe 5-1 pop, which In my opinion is not very fun as they usually come out crippled afterwards. Maybe the AI should try to build a healthiness building for every factory/coal plant/etc it builds? As Ive seen from espionage they usually don't build healthiness buildings often at all.
Religion. Religion is my favorite part of the game and I often play with Limited Religions to spread them out a bit more. I do feel that a few religions need a buff though, mainly Christianity and Islam. I think, If possible, that the number of free missionaries the founder gets should be based on map size to balance things out a bit. I have seen Christianity actually succeed once in my entire AND career but i have still to see Islam even spread beyond a few % before the time religions start to lose their power in the modern era. A alternative would be to let Christianity and Islam spawn a great prophet, as civs that acquire a religion late are a bit less likely to spawn one themselves?
Religion decay. Its mainly a personal preference, but I would like it if religions did not decay from a city with the religions buildings in it even if its not the state religion, like a monastery or a shrine. Perhaps the religions could start decaying after 1000 years (when the buildings reach double culture) to symbolize religions lost to time?
If religion decay is turned on, the civic secular is a bit to weak as a city will only have max 2-3 religions, if this was implemented secular leaders could construct temples to the religions to keep them in his cities.
Civilizations. I find it weird that both the Native Americans and the Iroquois are playable, are the Iroquois not Native Americans? Perhaps the Native Americans should be renamed the Sioux or something if possible?
War. Now, this one I'm unsure if its possible to fix, but I find it annoying. Civs like to declare wars on Civs on different continents even if they are nowhere near to have the technology for boats or ocean sailing. They also like to declare wars and then do absolutely nothing about it if they are on another continent.