There needs to be an easy way to put songs into set-list order. Prefixing each song with a letter works, but is tedious, especially if you change your set lists frequently.
Then there needs to be an easy way to load “next song in list” or “previous song in list”. Maybe on Maestro.
Temporary strategy suggestion: when user returns to song list, return to the song most recently loaded. That way, for example, you could arrange a set list such as “A Wildfire; B Grapevine; C Light My Fire, D …”, and after loading and performing “B Grapevine” you would only need to scroll down one item to “C Light My Fire”.