I only agree that mana control is that should be nerfed. Fairy heal is pretty much similar than regen or Aspected Benefic. Regen is even better than fairy if you need heal 2 targets. Astro is far most mobile healer imo. In pvp i think sch is the easiest healer kill especially if you manage burn their stacks with Retrogradation, One Ilm Punch, Wither, Glory Slash etc..