i think i already can tell but there's no way to make constraints bind to things like -
Rotate from Bone A will control the Shear on Bone B ?
or even more crazy
Rotate from Bone A will control the Alpha on Slot A?
I know i can do these things in the animate mode, but i would prefer having these controls in setup mode so that i can then use simple bones as levers to control complex actions and build animations that way