Needed classes on red?

[Kohedron]

Pretty new to red, only a few weeks into playing.

Definitely enjoying it so far, but it's hard to get a read on what classes are "needed", since I probably only run into 50 people so far.

The only thing I can really say with confidence is that there are an ass load of druids.

I already have a rogue and cleric to level 30, was thinking about making one more.