Hi, these new switchboxes are very welcome as i previously missed a stereo switchbox. I would go further and offer even more channels, e.g.
1 in, 2 out
2 in, 4 out
3 in, 6 out
4 in, 8 out
which are the natural extension of going from mono to stereo. These would allow to reroute quite a bit of a pedalboard at the press of a button. Another interesting switchbox to have would be to extend this scheme not in the direction of more channels to switch, but more states:
1 in, 3 out
2 in, 6 out
3 in, 9 out
where the switch toggles between 3 output grous instead of just two. Creating these programmatically should be almost trivial.. I.e. write a single general plugin that defines the number of channels and states per preprocessor macro and then just build them differently.
On MIDI switchboxes i have no opinion..