I disagree with you on your point about his healing spells. He literally stated that his build was that of a healbot, and lots of MMOs or RPGs have spells that are basically heals of differing effectiveness. Their value comes from the fact that he can heal people in varying amounts, and that he doesn't get immediately boned if one of his healing spells are on cooldown, because he has two others to use as well.

And Mana Control Enchanter would still be effective.