Heya Andreas
I'd like to suggest a few Touchbar widgets. Currently I have these set up in my layout, but not all are functional as I haven't finished configuring/coding all of them. Would be great if they were offered built-in "ready to use". Also, if you do implement this, please allow us to configure different color/icon depending on whether a feature is turned on or off.
Airplane Mode
Wi-Fi
Bluetooth
Screen Brightness (Toggle between current state and 0)
Keyboard Backlight (Toggle between current state and 0)
Graphics Switcher (Toggle between dedicated/integrated GPU - Currently have a script doing this)
Keyword Commands (Toggle passive keyword listening - currently have a script doing this)
Lock Keyboard for Cleaning (Shame that apple rejected your other app! I clean my keyboard about 5 times per day and have to lock my computer and watch everything go nuts as I mash the keyboard. Specially problematic when the touchbar gets a little wet from the alcohol)
Anyway, that's what I have for now.
Once again, thank you very much.