Have to give them credit for that.
One can only hope.
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).
The touch mbp should've been a macbook air-like spin off, used to demonstrate the viability of the tech by letting people who want it choose it... instead of forcing everyone who wants a high end laptop to pick that model.
While I personally wouldn't buy it (I'm kind of picky about the tactile feel of the keyboard), you can get this fully functional Bluetooth keyboard for $20.
My only complaints with the A1243 are that the top row is half-sized, and that it has a useless eject button between F12 and F13 which can't be remapped.
Plus, I actually use the "Windows" key now, so its absence would be missed.
I don't use tilde much.
There is no absence of a super key. Its on the spot where alt often is, and alt is on the spot super often is. It shares key with shift.
The ctrl is where caps lock is on today's keyboards. If I have caps lock I rebind it anyway. So ctrl and super are easiest to reach, whereas the spot where ctrl often is is difficult to reach (there is nothing there on the HHKB).
So in short this keyboard assumes you normally rebind caps lock to ctrl, it assumes you never use the ctrl elsewhere. It assumes you use super more than alt. It is pretty close to a traditional Sun keyboard.
Funny thing is also, you can buy the keyboard without print on the keys, so that you can rebind it in any way you prefer.
What?? I use it all the time: Tilde in vim for upper/downcase and bash for home and backtick for jumping to marks and in JS for template strings. Great key.
force touch -> force touchbar