What does everyone think about those AST buffs?

[technole]

Dissipation lowers your healing actually. It also costs a "TON" of mana.

I don't follow this statement. It doesn't cost any MP if it's an instant that gives you 3 Aetherflow stacks. If you were going to switch fairies mid-fight, there could be some strategic use of Dissipation and with the healing potency buff the SCH can make-up the lack of Embrace in that time. It can be a good progression tool in raiding. It's not perfect, but it's the SCH's emergency resources.