I'm not crazy about your AST suggestions, but I thought the WHM one was kind of cool. With CU I like the way it works but I'd like to see just a tiny bit of flexibility in it. Specifically I'd want to be able to activate it during the last second my of movement without it breaking because my right foot twitched as I came to a halt, just to make it a tad easier to time the skill. A1S for example, I found trying to time it between jumps was fairly useless—if only I were able to activate it a second sooner. Additionally I feel like instant casts should work with CU. This would have it working nicely with the AST tool kit. Also, I think AST should be focusing more on speed/time management than on potency, with WHM being the opposite. Specifically with Diurnal, as Nocturnal really demands that potency to be useful in its role.

SCH is still a totally unique healer excelling in the same way it always has with the fairy/DPS combo. I think they should continue to focus on those aspects. Something like, if the SCH lands a Critical Broil then the fairy procs it's own instant Succor-type spell, etc, anything to increase the amount of time you can potentially be DPSing, hopefully relative to SCHs long time love affair with Crit.