Controlling sliders with external midi controller

@The7Mirrors was asking for support of peripheral midi hardware.
One could assign sliders to multiple layers and change the intensity all at once in example. Even from more than one active object.

This would be the nicest thing I can imagine.
But an animation timeline like in zBrush would have much more benefit for sure. And both are quite unlikely to happen in a tiny sculpting app with so much potential and so much elementary things one could improve.