A device similar to MX Ergo S but with a far greater vertical angle AND the track ball on the right side so the thumb does not have to be used. Everything else about the Ergo would stay the same.

I probably have another 15 years to live but my thumbs are unusable, so the I have to operate the trackball with the palm or my fingers. It would be SO MUCH EASIER if I didn't have to rotate my hand to access the trackball.

PLEASE CONSIDER THIS. A thumbs free MX Ergo.