...but you cant do that with a regular keyboard, nor phone, nor other OS. How would it know if the app is non focused which app you're commanding without taking more processing power for independent 'quick keys',and from all the new electron apps we already know how efficient they are with memory usage.
Well having shortcuts to stuff that you don't want to have to trackpad up to and click every time, or remember keyboard chords for. Same purpose as function keys, but without the memorization necessary to use them.