Level 6 priests?

[Joonie73]

Is there a reason to promote level 5 priests to prophet status? I know that at least 2 of the heroes are already level 5 (Carmont for Marignon & Bartholomeu for Pythium). What advantage would I get from a level 6 priest?

[Psitticine]

Banishments and the like depend on priest level for their effectiveness, so level 6 is better in that way than level 5. Personally, I wouldn't bother if I could gain another Priest-5 by making somebody a prophet (those Smite spells rock!) but if I couldn't, than a Priest-6 is still slightly more powerful than a Priest-5.