Also having SCH/SMN as ACN is awesome. All the benefits of having a new job (no different than unlocking AST really, it's just a questline that unlocks yet another job), while also choosing whether to level it as a healer or dps because they share levels. Do solo quests as SMN, do dungeons as SCH for fast queues. Best of both worlds.

If they just let ACN queue up as either dps or healer, and give them an action to reverse magic attack and healing stats (without a cooldown or timer, but can't be used during battle), this would not be an issue.