Maybe returning..

[quellren]

If it 'levels quick' and solos well, everyone is already playing one to farm plat and gear for their twink non-soloers.
Play whatever waves your flag. Rolling a char because 'the server needs it' will almost guarantee that you burn out and re-roll.

If you absolutely have to play an under-represented class, try ranger, rogue or monk.
Next in line would likely be warriors and clerics. most tanks are Pal or SK, and healing is in my experience, tag teamed by shaman and druids.