A guitar is interesting because you can create different sounds depending on how you touch the strings. You can choose to fret with the tip of your finger, with

A guitar is interesting because you can create different sounds depending on how you touch the strings. You can choose to fret with the tip of your finger, with the flat part of your finger, mute the string below, etc. This wouldn't be possible to do with an electric input device. What you are suggesting is an entirely different instrument, like a Midi / Guitar or something, and I'm sure there would be a market for this. Barre chords are a large stepping stone for a lot of people, but there are a few techniques to doing them. Why not look at YouTube for guidance here?