I personally suspect one day they'll marry the touch bar and the taptic engine to make a keyboard surface. That way they could have emoji keyboards and such. And they would only have to manufacture one top case, no matter what country they were shipped to.
They registered a patent for pretty much exactly that before the original iPhone was introduced.
Maybe if it worked with the Apple Pencil and the taptic feedback was good enough I could see being curious about it. It’d probably just be a good way to incite a riot though.
I’d probably try out a ultralight/thin “laptop”, akin to what is depicted in Westworld. Two touchscreens clamshelled together.
But yeah, I think they’d need to keep the door open with a traditional keyboard layout too.