What I'd really like to see is Fender or some other company develop something like a SmartGuitar. I feel like there's a lot of potential to improve the ergonomics, accessibility and functionality if the strings were replaced with a multi-touch input surface with haptic feedback. Maybe the pick could be replaced with an input device that included an accelerometer, pressure sensitivity, and haptic feedback. On the software side the possibilities are endless. The multi-touch input could be 'auto-corrected' to make the fingering of complex chords more forgiving.