Drew
Forum MVP
...scales in four-note-per-string patterns...
This is actually what first made me consider tuning in 5ths. Chording would be trickier (but not impossible - a minor chord could be played by barring any three strings, and fretting up a fret on the thinnest, and a major with the same shape but up another fret up top, but it'd certainly be an unusual voicing, root-5-3rd8va), but the real problem (aside from the fact I don't have the reach to comfortably do 4nps stuff between mu middle and ring fingers just yet) is that the physical range of the guitar you'd need to do this on a seven is tremendous - high A would be tough, so you'd really have to tune down, and if you drop a 5th below a low F# (like AYB;s suggested tuning), well, that's a B an octave below standard in 7. That's LOW.