Arcane, Divine and Psionic...
The prime examples of each, IIRC, are Wizard, Archivist and StP Erudite.
Any ONE of which could shatter a campaign. Yes, I think that would be a bit much for 1 DM to handle. Maybe go for the iconic roles instead? Caster, Skillmonkey, etc?
Back to Monk. BloodStorm...