The TouchBar would have much better potential if they integrated a Taptic engine, and better again if it was a taptic engine which gave you feedback when you were over a button you could press (which is quite possible, some of the initial taptic research could make you feel sensations - from memory something like waves or water?)

And then required force to execute the button - "force touch" / "3d touch" - not an accidental tap.

I really hope they iterate to have at that, at which point it would be much better.