I will make one more point about troops in different regions/cultures: When I took Barrca in North Africa, I was subsequently at war with the Mamluks. The thing was I was fighting their armies with the exact same troops as they had. That is what kills it for me;
a carbon copy battle, with forces the exact same as mine just seems out of place. I am essentially Mamluk, It makes your culture adapt completely to the culture you conquer. There is no conquering, it is about adaptation:
As well, the argument about slow time rates hindering trans-cultural diffusion is a non sequitur in this mod. Ultimately in reality a few early game merchant trips from Europe to Syria and back and it be 1277 AD. The mod presents a feeling that a lot more time has gone by then what the date portrays. Time makes little sense in this mod, that is not a criticism, the native map is so different. The way 1257 AD works now is probably the best way to do it.
"Forced diffusion occurs when one culture subjugates (conquers or enslaves) another culture and forces its own customs on the conquered people. An example would be the forced Christianization of the indigenous populations of the Americas by the Spanish, French, English and Portuguese, or the forced Islamization of West African peoples by the Fula[dubious – discuss] or of the Nuristanis by the Afghans."
"Inter-cultural diffusion can happen in many ways. Migrating populations will carry their culture with them. Ideas can be carried by trans-cultural visitors, such as merchants, explorers, soldiers, diplomats, slaves, and hired artisans. Technology diffusion has often occurred by one society luring skilled scientists or workers by payments or other inducement. Trans-cultural marriages between two neighboring or interspersed cultures have also contributed. Among literate societies, diffusion can happen through letters or books (and, in modern times, through other media as well)."
Either way it is an interesting topic, nonetheless.