Holdings where only slave camps can be "built" - intentional?

I've looked into temples in the game, and I noticed no normal building can be built there for some religions/regions. I find that wierd, since even a people as stupid as the Dothraki can grasp the concept of building religious stuff. The usual list of religions for every building is the 7, R'hhlor, Moonsingers, Harpy and Bearded Priests... frankly it seems like a relic of an earlier update. I can understand not wanting to give temple shipyards to Wildlings, Dothraki and Northmen, but I really don't think the Summer Islanders and eastern Essos should suffer for that. And most of the other buildings should be available to any_religion, unless there's a specific lore reason against that. Are there any 1.0-compatible submods out there that remedy this?