For the record, I'm totally imagining C12095 as J. Jonah Jameson now.
"Healers need to be more appealing, folks. Get on it." /puffs cigar
Moving on down the line, What if Mystic was better at nullifying negative conditions? Antidote could be rolled into Rejuvenate, along with the power to instantly end DoT attacks and/or prevent them from working for a short time. It would kind of give them an anti-Necro quality.
And actually, there should be a concise list of buffs and debuffs someplace. That would help me greatly.
That AoE regen sounds like a good skill too. It might could have a similar property.