Priests help with conversion?

That would make tons of sense, but I always assumed they didn't have any effect on the strat map. Then again, I only have limited experience with the ERE and even less with the WRE, so I haven't had much opportunity to experiment with this.

Tactically, you want to set up your priests behind your main lines and get them chanting. It helps your units' morale, but I'm not sure how big the radius of effect is. I would think any more than 2 priest units in an army would be overkill. Aside from chanting I wouldn't use them for anything else -- though when I'm assaulting a town, for some reason the AI likes to start out with my priests manning the battering ram. Erm, no thanks computer, I think those men of the cloth can wait this one out while my Comitatenses handle the sweaty ram work...

CountMRVHS