Thanks for the latest firmware, I can now at least flip through the parts with my ext foot switch.
I think what would take it a step further would be to use the ext foot switch ( left and right ) to scroll through the parts on what you want to play next (make the text/screen blink to indicate what you’re seeing is preview/up next/on deck)
Then, when you’re ready, press the main pedal to Take/Select/Enter so it starts the transition. You can also hold to extend the transition like how it is now.
This way, if the player or audience wants to go back and forth between chorus, bridge, pre-chorus or verse you won’t need to sit through and listen to parts as you scroll through them.