Agreed that I wish they had embraced, extended, or extinguished the Touch Bar. A larger offset from the top row of physical keys, a physical escape key, some form of accidental touch elimination, and/or a taller display surface would all be useful changes.
WRT to an external keyboard with it - in addition to making keyboards more expensive and proprietary, the Touch Bar is powered by the T2 chip, which is not just used to power the Touch Bar and TouchID, but for system functions like boot-up.
Even with these features removed, dynamically paired TouchID sensors would be a change to Apple's security model (which requires a hardware/data reset to pair a new TouchID sensor for security reasons).
Haptic feedback. I don't understand how they can understand how essential this is and implement it with increasing sophistication in both phones and trackpads but abdicate it entirely with the Touch Bar. To the point that third party software to use the trackpad haptics on touchbar clicks is a thing now: https://www.haptictouchbar.com/
I suspect it's probably hard to get the keyboard to straddle the touch bar, but I couldn't help think: Why not physical escape and power keys at the ends?
They should have just kept the F-keys and provide a system level option to neuter the touchbar as just a modern day reference card for the keys. It's not like the wrist rest isn't big enough to sacrifice for more room up top.
WRT to an external keyboard with it - in addition to making keyboards more expensive and proprietary, the Touch Bar is powered by the T2 chip, which is not just used to power the Touch Bar and TouchID, but for system functions like boot-up.
Even with these features removed, dynamically paired TouchID sensors would be a change to Apple's security model (which requires a hardware/data reset to pair a new TouchID sensor for security reasons).