Religion-related classes can be made more interesting. If you add them some unique quests, or dialogues with God, which would give unique quests ...
Agreed ...
I can imagine some of such dialogues ... like for example:
Are you f***ing kidding me? You worship lord of Murder and you decide to help some lowly Halfling?!Or from the other hand ...
Are you f***ing kidding me? How could you think that me, Tyr the Righterous would like you murdering inocents?! 
and for them items or spells.
And here you lost me, to be honest ...
It sounded like fun idea, now it looks like another "i want better things for character i want to play".
