Fair enough, I understand your points except for the button bloating as I'm only adding one new button that replaces Ruin 2 which SCH already currently has.
It's not the ultimate fix but I still feel like it would be better for SCH overall.
I dont really get how SCHs current Aetherflow system is like Sage. Since Sage can only use it for healing and mitigation more similar to WHM. Sage generates Addersting only when its single target shield is broken so you cant really have something like that for SCH (not anymore at least since Sage has it)
Maybe naming this as a "Rework" of SCH wasn't the best thing in the world, probably should have named is as an Aetherflow specific rework.