A coworker has a superwide display. I don't.
Screen will show their display so it fits within my display, meaning text is too small to read.
Some sort of zooming/panning support would be very helpful.
Tuple is (only) slightly better in this regard: With some fiddling, I can at least manage to resize the shared-screen window to be the full height of my display, so I can kind of use it by manually panning as needed.