So it seems like every civilization that's ever gotten big is getting made into a custom civ nowadays. While that is good to see, it does raise a big issue when it comes to city states, because there's probably only so many times you can substitute a civ whenever you promote a city-state to civilization status. What I'd be interested in seeing is a mod that allows for the inclusion of city-states equivalent to Firaxis Civs whenever they are out-of-game. For example, a game with Mexico as a civ that doesn't have Spain could potentially have Madrid as a city-state (maybe Barcelona and Vitoria/Bilbao due to the independence movements as well). You could have M'banza-Kongo as a city state in one game and the Congo civilization in another. I don't know if I explained it well, but I would like to see a mod like that so we could worry less about switching city-state names all the time in mods.