It would be nice if it was possible to bind midi knobs/sliders to the controls in Yoshimi. Again - i think this is already possible in the testing branch. Would be a nice feature in stable.
MIDI learn is not available in the testing/experimental 0.062 branch. It's available as a fork on github: https://github.com/licnep/yoshimi
I could import it as a separate branch here on SourceForge though and at least fix some apparent issues.
The experimental branch here on SourceForge does have some hardcoded MIDI bindings though, I'll dig up the bindings list and put it up somewhere. An idea could be to try merging this feature with the stable branch.