Is it possible to send feedback to the control panel?
For instance for automation so that you can see the control move when playing back?
No sure what you mean by control panel. But if you mean OSC/Pilots interface, yes, it recieves Midi and OSC messages.
So when you assign a Fader of OSC/Pilot to Ableton - and the automation of it is changing while playback, you see the Fadermovement in OSC/Pilot, too.