I'm an avid DPS healer, both WHM and SCH, but I'm quite interested in seeing where AST will take us. I'm all for AST being primarily healing/support, with the caveat that it keeps me busy and provides as much party support to equal the damage output of Holy or Shadowflare + DoTs. If playing AST brings strong party utility, good heals, and requires a good amount of finesse to maximize it's potential, I'll be happy with it, maybe even enough to switch mains.