At the moment there is the very nice possibility to add haptic feedback to button presses. However I personally hardly feel it even at max strength because my palms are seldom resting on the case when I'm playing with the touchbar.
May I suggest to introduce another kind of feedback : on button press, the touchbar's background may become instantly white or red or anything then gradually fade to black again. I guess it wouldn't be that hard to implement and the effect would be useful, dramatic and cool.
At the moment, we do have visual feedback (the button changes color), but it's hidden by our finger
Anyway, thank you very much for getting a use to this touchbar!