Aussie_Lurker
Deity
The problem with Civ4 religions-diplomacy wise-was the *automatic* penalty for having different religions. Any diplomatic penalty should have been small (on a par with having close borders or different civics), but with the ability to build the penalty via your actions in-game-purging religions from your city (which should have been allowed in the game), razing cities with the other civs religion in it &/or having intolerant religious civics. It would have also been nice if players could have had greater power in setting the doctrine of their religion (with attendant bonuses & penalties) when the religion is founded (& at different stages in the development of the religion).
Aussie.
Aussie.