After thinking about it some more, maybe an 8-string guitar could be fun for experimenting with actually reduced range. Tuning in thirds for example... maybe the chord voicings made possible with that would be enough of a departure from "normal" guitar playing to be inspiring.
Usually, on guitar, we don't play 6 chords very often because most voicings are awful to play on guitar, and we omit a bunch of notes from extended chords as well simply because we can't play them, either because we don't have enough strings, or because the close-by frets don't have the right notes. I'd have to look into it in further detail, but it might be a thing.
Usually, on guitar, we don't play 6 chords very often because most voicings are awful to play on guitar, and we omit a bunch of notes from extended chords as well simply because we can't play them, either because we don't have enough strings, or because the close-by frets don't have the right notes. I'd have to look into it in further detail, but it might be a thing.