Karabiner Elements is user for a more complex modifier [1]. I use Karabiner to remap Caps Lock to hyper (cmd+ctrl+option) or just esc when pressed alone.
Touchbar can be useful especially with apps like Pock to save some screen real estate. The only thing that they should do is to bring back ESC key and maybe allow for switching numbers row to F-keys with Fn. That would allow for rich media control and whatever you want on touchbar and still have proper, tactile functionality of keys.
