We will see next turn if we could have some fun with them 
Any idea on their conversion rates? God-like or newbie-like?
Imo, balancing NPC priests is next to impossible. They are far more likely to be either way too powerless or way too powerful. If they can't be arrested and they have too good an oratory skill, then no IG religion will be able to compete with them and they'll just takeover everything. On the other hand, if they can be arrested or if they don't convert fast enough, they won't really represent any kind of significant threat.
