I actually would add:
- Shift more damage from icelance to frost bolt.
- Give blink a snare removal effect similar to warlock portal.
- Nerf mage-armor some more? The debuff duration is pretty brutal versus dot classes.
The healer-dispell problem is more generic. It hits mages hard, but all other casters are affected - perhaps make CC undispellable for the first 3 seconds? Priests got a huge indirect nerf since they went from being the only offensive healer with a defensive dispell, to sharing a defensive dispell with everyone (and the usefulness of double defensive dispell decreased with the loss of junk buffs).