> In particular, oft-used commands[1] should be available through a single key (or a very short and accessible[0] key chord) if possible. Wouldn't a real ergon

> In particular, oft-used commands[1] should be available through a single key (or a very short and accessible[0] key chord) if possible. Wouldn't a real ergonomic keyboard (i.e. Dactyl-Manuform or Squeezebox) with thumb clusters fit this bill? Those put the modifier keys on your thumbs, so a two-key chord (layer mod + main key -> function key) should be relatively "short and accessible", at least by my standards.