It depends. Healers seem to be getting a major change in regards to the pure/shield healer focus. We know AST is probably getting overhauled, and I suspect SCH will as well. Whether or not they respond to the cries for more DPS options on healers remains to be seen, but I doubt that will change.

I see a lot of discussion around MNK and SMN getting reworked (and maybe BRD a bit), but everything else looks like a toss up.

I would like to see a little fine-tuning in how DRK plays to make it more distinct from WAR, but don't see any of the tanks getting a lot of attention, as the devs seem happy with them.

The biggest change I would like to see is a refined leveling progression for all classes. Some, especially melee DPS and BLM, can feel extremely clunky before 70.