One feature I still miss is being able to in-stream selection filters - I could get just a tcyl on layer 25 that was entirely inside a pick-window. Other systems spent so much interface on being able to manage the selection list, instead of just getting it right in the first place. With the tablet, those filters, and all commands, were in fixed locations so that muscle memory would get it right, instead of having the eye-hand coordination of mouse-to-cursor control that provides poor feed back and long travel distances.
It seems like it would be so easy to use a web-cam to watch a printed menu and wait for the mouse click - put a small lamp on the camera and a retro-reflective dot on the mouse for easy tracking - and voila, cheap menu tablet.
Dave S.