[MOD] Reformation and real city conversion

[mesra]

Just looking at a couple of religion mods and i was wondering if religions can just be added without removing others. Also it seems like every mod is trying to associate each religion with an advancement or some prophetic figure. Why can't they just be like some sort of option that a civilization gets to choose at the beginning of the game without any requirements (the founder of the religion being the first to build its holy site while having it as a state religion). Maybe it can be done by swapping religions with the government civics but leaving missionaries dedicated to spreading religions rather than government systems. Just an idea ..