Specifying triads more fully and accurately in contrast to 4 or more note chords would be great!
I'm thinking of how that would work so well in combination with the also much wished for ability to use more than 4 chords per bar.
Even more specifically for "fast" walk down and walk ups. ( For a guitarist with less than olympic level gymnastic fingers -like me- being able to specify switching using the triad as opposed to 4 note chords or barre chords could be helpful )