By nature, touchbar is a partial display and partial input device, blend it in with keyboard(a purely input) on the same flat surface angle, doesn't feel right. Currently, the only time I look at touchbar is when I need to click on touchbar, 50% of functionality just wasted in this sense.
If Apple kept the hinge design in pre butterfly keyboard macbook pro, that would be good place for touchbar. The location is more close to display, touchbar can act properly as a small assist display, also kept the keyboard part a pure mechanical input. The 45 degree elevation angle is also nicer.
If you still have pre butterfly retina macbook pro, just touch that hinge part, you may like what I said.
I did a quick low res mockup here: https://twitter.com/lostylogic/status/1194875389165760512/ph...