Maybe there should be more priestic skills for someone who wants to be priest, like enchanting, but thats already part of magic, but there could be a meter like devotion to gods, like you would have something like this
Talad: 15,78%
Laanx: -7,89%
that blue fire or what was that: -7,89%
, so when you would make sacrifices to gods like giving away trias or sacrificing health (just little effect) you could get your religion up for that god and other gods would get angrier for you. And if you would kill cults dedicated to Laanx other gods would like you more and Laanx would get more angrier, and then on certain point they would start to give bonuses to you or haunt you.. Like if you would be in favor of talad you could get more damage, but Laanx would send some servants to kill you.. very fun for dedicated priest

..