Yes, I think that is fair comment - probably too far outside the scope of the game.
Captive system would be a brand new resource. Hard to fully implement in game. But I think a Temple instead of a Plaza would be very welcome. We may integrate the Warchief to dance-speak ocasionally. āTlatoaniā means āhe who speaksā. But we will need a new model for this new Temple, the traditional is now integrated.
Also, I want to change the Sheep for Turkeys in Aztec, Haudenosaunee and perhaps Lakota farms. I already did this, in a mod.
I would prefer to give them a counter infantry type upgrade with their combat card in in age 4
I think it would be simpler to just add promotions to all Aztec units, but it would be very difficult to balance at first.
Bad idea imo. As I said above, all armies had promotions, so why give it to every aztec units while many civs donāt have it?
Previously I want to give Skull Knights a Combat Promotion. OP.