If ASTs replace anyone, it'll be WHM, SCH is in a really good place right now since they have as much DPS as their SMN counterparts without pets (hello same kit). I don't disagree that based on information that I've read around the forum that Dissipation seems like a really shit-tier skill that needs either significant buffs or a complete rework; however, just because SCH has only one defunct skill compared to AST's many defunct skills now being only one that's kinda bad (CO iirc), that's not a reason to damn a class back into the closet.

If I can grow up, perhaps you can too.