I could go either way, so it depends on how strong your collective opinions are.
I'm pretty keen on 9th-level+. Shall we wait to see which Shade prefers?
That's fine with me, as long as the prereqs are flexible to allow a variety of 9th-level characters. Something like...
Base attack bonus +4, Knowledge (arcana) 4 ranks, Weapon Focus
This allows single-classed fighters, clerics, and wizards to all qualify by 9th-level, but may allow multiclass characters to enter a bit earlier.
If you'd prefer, we can make it so a multi-class character can enter at 9th-level, and make it more difficult for single-classed characters.
All the suggestions would be pretty easy for a cleric. Other than BAB +9 or 5th level spells, I haven't seen any suggestions that would stop a cleric entering by 4th level. Not sure what to suggest, though. I guess it really depends on how strict we want to be with the level requirement.
D'oh! I forgot cleric's have Knowledge (arcana) on their class list.
Limiting clerics is tricky.![]()
I suppose, though that pushes some classes to even higher levels. Still, I'm fine with it if Shade is.