Frogboy, two questions emerge:
1) If I take minors´ city by force, will I be still able to train their unique units? Or only by diplomacy?
2) Earlier, you mentioned available units depend on a way we build our cities. Good. So will there be any hard restrictions, like mutually exklusive buildings? I.e. going through the mounted units building tree prevents you from going through after the pikemen? Or is there a soft counter, like increasing cost of opposite building?
Or do you rely on time as a main deterent of "build everything" strategy?