I have a midi controller for audio levels (Behringer X-Touch Compact). I would like to dynamically assign physical faders to inputs - either from Companion, or automatically when a source is put on air via a trigger.

I have too many sources for the physical controller, and it would be great to be able to quickly select a source to get control of their channel.
I'd also like to be able to set, for example, the first fader on the console to always be the on-air source.
Would be great to be able to use MIDI SysEx messages to set the text in the scribble strips, as well.