Background for my thinking here: While playing on the Pico, I was fiddling around with the pitch bend, and while it's very easy to play a note and then bend it down or up, it's virtually impossible to start off with a 'bent' note and 'unbend' it, like you can on a guitar. I then thought maybe you could do something with the Stringer agent, which already deals with monophony along single courses (i.e. strings).
Would it be possible (in the future) to set a keygroup/instrument so that pressing the notes does nothing, until you also press the buttons at the end of the course? This would almost emulate guitar playing, and you could start with bent notes and unbend them, too.
So for example, you'd hold a few keys with your left hand, then run a finger from your right hand along then end-course buttons, and this would 'strum' the strings.
Just though I'd throw this wild, crazy, half-formed idea out to you guys ;)
Tene.