And... back to MIDI guitars.
I remembered that a friend of mine has a Godin nylon string "Tele" with the jack for Roland synth systems built in.
He's bought Roland modules a couple of times, the second time I got to play with it for an hour or so.
It triggered well, I didn't have time to explore much, just preset surfing.
Nylon strings are very different than steel, I like them for what they are but they don't respond to stretching notes or vibrato in the same way.
Plus the neck was a bit thin for my tastes. It did seem usable in terms of the synth and sample sounds. In the end, he sold the units both times and I probably would have done the same.
Godin makes steel string guitars with the Roland option as well. Nice instruments but again, not my preference for neck sizing - an important factor.
This looks interesting. If I am not mistaken, every time you stretch a string the system will either lose track (with a long bend) or since the distance from bridge to fret has not changed the note will not change either. https://newatlas.com/laser-system-detects-guitar-string-pitch/19278/
A long time ago a friend of mine built a pickup for his guitar using beams of light to detect the strings. There were other light beam pickups then and still are - https://www.willcoxguitars.com/lightwave-optical-pickup-system/.
The advantages would be zero magnetic field, the ability to have completely discreet pickup from each string. The primary disadvantage I can see is the area above the strings must be covered, hampering picking technique, which may not matter in an instrument used purely for MIDI. My searches did not yeild any MIDI guitar setups utilizing light beam pickups, anybody find one?
Another fairly interesting article from 2016 so reasonably current. https://www.premierguitar.com/articles/23660-decoding-modern-midi-guitar
I'm thinking that strings themselves inherently have problems that will not be easy (or even possible) to overcome for now. AI may change all that but is not there yet and who knows when that will happen.
For playing any MIDI related sounds, keyboards still win, electronic drums still win and even electronic "wind" instruments still win.
I'll get what I can out of my Triple Play and limited keyboard skills and just keep playing guitar!!!!