I think it's a great idea; just one that might require a few advances in technology. With sensor(s) placed correctly on the guitar and the right software, I'm sure it would be possible. For me personally, the Oculus Touch controllers do give a very tangible sense of finger-movement. 99.9% of six-string guitars have the frets and strings in the exact same placement sooo... i hope they really do look into it for the next, or maybe next next iteration.