I am wondering if we are not too pessimistic about feedback for that application : why not use physical chord-like movements to different actions (delete charac

I am wondering if we are not too pessimistic about feedback for that application : why not use physical chord-like movements to different actions (delete characters, words, sentences) or like making distinct handsigns assigned to more used phonemes and less used one to chords of several finger joins like index / thumb, etc. Would be weird at first but, as learning vim taught me, building a coherent grammar can definitely make a big difference.