Putting aside already great existing wishes/requests…
I would highly appreciate adding more options that would be available for the button to hands-on experience. For example, user could define switch states for a current preset: like, making some pipes bypassed in the first state and activated in the second. Or having one subdivision set by default and the second make switchable. As long as we «program» these two (or more, like sequenced? would be super cool) states it would be nice to have an external access to these over midi. Like CC100 → value 3 → the third state of a preset.
Currently, it can send one hex message. Would be great having a set of messages in a more convenient ways to enter (like these CC messages here, those PC messages there). For the sake of convenience I imagine user could just drop a specific pipes right in the main editing window.
Also, would be great having some pre-made messages to be sent on a preset loading, but that’s another story.