The PR got in, so latest version has those menu-nav OSC messages, now.
I talk about it a bit over here, but basically @oweno and I are thinking about midi menu-nav, too.
With careful management, it could probably be built into the mother cpp runtime, I think we just need to shut off “listen for midi”, once a patch starts, then turn it back on when the menu opens again. That seems like it might be kinda flakey & fragile though. Maybe a direct-read from joystick, or some other external input (like a typing keyboard) would do the same thing, and work better.