We've done it, not on a classmate, but with a laptop and additional screen. Like I said, not the best of arrangements, but sometimes that's the only way.
The point being, of course, that if it
can be done, someone
will do it. Look at all the different robot designs every year, the "lawyering", and rule changes.
The decision to use the space key as an e-stop was made because the classmate was pre-decided to be a driver station only, and never thought of as a programming computer. "We didn't design it for that." "We never thought of that." But notice over the years how many people program with it? See also
unintended consequences.