Maybe a different name for them?
I don't know if you were aware, but 'theurgist' has a specific meaning, originating from the Greeks.
Basically, a theurgist was simply a cleric who respected _all_ the gods, and was not dedicated to a single temple. I think they functioned as a sort of 'go to' guy for information on appeasing gods not well established in a given area, a generalist.
Feel free to do whatever you want, of course, but just thought I'd point it out.
-=Will