Quote Originally Posted by uanime5
If the Skaven conquer a human settlement they will kill the humans and destroy their religious buildings, then worship the Horned Rat. This will increase the Skaven religion and decrease the human one. Also a priest from one religions could cause problems in another religion by criticising the host religion.
I'm still not convinced. I still a proponent of calling it "cultural afiliation" or something like it. An invader becomes gradually the dominant culture. If we elmiminate priests this shift will be even more gradual and a lot harder as a player to control. We can have all faction specific buildings increase their "religious/cultural conversion" and nothing else.

All the people aren't killed when Skavens take a settlement. They make the resident population slaves. So they'll be alive and ready to be liberated. I assume it's the same deal with orcs. The only cultures hell-bent on destroying anything not of their race are humans and the Tomb Kings. I'm not sure how we could make that to be represented in a convincing way. Skaven live underground anyway so I guess it would still work.

Since every faction has their own religion, keeping the religion as in MTW2 won't add anything. I think it would be better to just write that so-and-so religion is being worshiped without their being any effects on the game mechanic.