My suggested alternative 5.3 patch changes:

SCH

Bring back Miasma
Replace Art of War with Miasma II (but I can compromise and keep AoW)

WHM

Bring back Aero III, and preferably add an upgrade to Tornado , its animation exists already.

AST

Same changes but less heavy handed on the MP buffs. Maybe 8% on sleeve draw and leave it like that.

And with these changes reduce Sleeve Draw's recast to 8%


You get a less clunky sleeve draw.
Instead of bringing down AST's rDPS you bring up SCH and WHM's.

You give a little back to WHM and SCH to break up some of the monotony.

Not the rigorous changes I think are needed (I expect 6.0) but are small changes to make that would offer a little something more in the mean time.