Since you can select items on the Touch Bar with your mouse, how awesome would it be to have custom actions with the scroll wheel?!
Like, just move your mouse down to the Touch Bar and scroll up or down with the scroll wheel to increase and decrease volume, change brush size, zoom in and out, move through Touch Bar scrollable area without swiping, etc.
If this is currently available please let me know because that opens up a whoooole new level of customization. My mouse has about 50+ points of customization (Logitech Master MX 3 + Logi Options) and if they could be integrated into Better Touch Tools that would be insane!