I know this has been mentioned a handful of times, but Momentary actions would be great.
Use case, Talkbacks. Press and hold to unmute TB channel and mute when released.
I use 3 channels for a single Mic, and unmute depending on which group I need to talk to at that moment. Better than needing 3 mics.
(Yes yes, the talkback section of the console, but that doesn’t allow for different levels per mix, so if the drummer needs me louder and the bass player needs me quieter, so that section is already ruled out).
Alternately, allow TB section to have level adjustment per mix per TB Group.