I am a keyboard junky. I have long used LaunchBar (since OS X Beta), Keyboard Maestro and other utilities to do almost everything on my computer and while keeping my hands on the home keys. And I mapped the CAPS LOCK to ESC many years ago.
For me the current Function Keys are mostly wasted space. I am not sure how useful the Touch Bar will be for me, but I feel it will be more useful than the current setup.
(corrected: keeping hands "on" home)