Obviously possible, but dunno. Every thing we add increases complexity, and many, many people already find our boxes hard to use.
For this reason, we really don't want any new features that don't change people's lives.
Using yours as an example, we could add an extra AUX switch entry, but then we would also have to add an apparently unrelated something to allow you to nominate the preset. Then, some people would want to have more than one preset….
Sounds like this really needs some kind of external MIDI pedalboard.