"Nothing new under the moon (/sun)", I didnĀ“t claim it to be some groundbreaking idea of mine, itĀ“s been done many times before, ex: mount and blade, battle brothers... Your living city idea sounds nice but as you say there is no point if the player barely sees anything; its much better to just create the ilusion. The first time I experienced a city that felt alive was while playing "Gothic", the npcs just made their daily routine, wake up, breakfast, work, tavern, maybe get dead drunk (or smoke some "swamp weed" for hours š ) and went to bed. I loved how alive those cites felt. You might still get your wish with AI nonetheless.
But let me be more explicit about my idea, as Toxe said I want to make the player feel in the middle of someone else“s "Stellaris" game, no need to produce more events than the necessary for war/peace. Think of each state having relationship tables with all others states, and each cycle they get better or worse, depending on their characteristics: dictatorships hating democracies, closer distances between states increasing maluses, random events that may sour really good relationships or improve it...
The states do their thing, and you are just some dude trying to profit when war eventually blows between them by doing mercenary work. And in time maybe you can even grow to be the black hand that greases with money power hungry states to go to war.
NOW, my question is, can someone give me a few pointers how to do this?.