what disqualifies the use of one pedalboard per song for me is the time they need to load: you can’t seamlessly move from one song into the next one while the dwarf is silent for a few seconds.
i think what i want would technically be possible by using the virtual MIDI feedback feature with a MIDI plugin that generated program change messages. each song would be stored as a preset, each preset would consist of a list of PC messages that advances when triggered.