It would be pretty cool for monks to be a martial controller ... or what about divine? Not the blasting-lasers kind of divine like clerics, but sort of divinely gifted martial artists. Similar to a paladin, but ... different.
That was probably the most vague thought I've had all day, and I apologize for that. But if they went for that and could pull it off, I would be impressed. I think it'd be pretty cool.
Perhaps they'd do a lot of throwing people around? Effectively AOE, a lot of knocking prone. It definitely wouldn't be anything like the wizard though, that's for sure.