My dream --

Physical knobs and buttons (preferably with universal indicators of current state) for mic mute/unmute, camera on/off, volume.

Laptops can have either built in or a usb/wireless accessory.

Mobiles also need physical buttons if not knobs.

Edit to add:

A raspberry pi zero or less and commodity buttons / dials in a well designed case should easily work for this. I know some streamdeck projects exist but not sure if they specifically aim for knobs and other tactile UX. Any projects in this space we can get behind or emulate?