Perhaps the UI can detect if there is some “MIDI-learned” control, and if it’s the case, then only show these. If not, it show all.
But currently there is a problem here: Currently you can do MIDI-learning from Zynthian-UI using the touch interface. Logically, you need to see unassigned controls for this function, so we would need some way of changing the “show level” from Zynthian UI. Ideas?
Another option is to have a “check” in the MOD-UI for controlling if you want all the controls in Zynthian, or only MIDI-learned ones …