I support balance within reason, with reason upholding the continued prioritization of keeping the classes all relatively equal (among the general populace) in how much fun they can be to play. Individual preferences can go one way or another but as long as there is no class that is not fun to play that should be what DnD Next aims for, right?
What sort of imbalance would you consider acceptable so long as it did not make classes less fun to play?
What do you want from the different classes regardless of class balance?
Edit (12/1/12, 6:55pm EST): How do you want the gameplay to be like at the lowest levels and at the highest levels for the different classes? What do you picture certain classes being able to do or not able to do?
I'm collecting suggestions and feedback on a tabletop game system I'm fiddling with (the subject of my blog). It's going to be a hotbed of experimental stuff inspired from lots of different sources (with much of it based off of mechanics in DnD and other d20-die based games like Pathfinder and 13th Age).