I see it benefitting me as I am just starting to learn as helping me with best finger placement for my desired chord. Certain chords, though I have my fingers on the correct frets and strings, don't sound quite right to me at times. I was thinking if a device was sensitive enough, that as I moved my fingers slightly in their placement, or the creating different pressure, I could get a better sensibility of creating the best sounding, or purest sounding, note. It would also help train my ears further.
Flight of fancy stuff I guess. Probably would be a thoroughly expensive doohickey. And I have no idea if I've communicated what I was thinking well.