Just a small suggestion.
Perhaps might it be an idea for the music that is played on each fight, be the theme of your opponent, rather than the stage it’s associated with?
I ask as Rash, Mira, Raam dont have their own stages and so currently their music is never heard. Also ion the matches where you face multiple opponents, this would give some variety per match.
I would suggest that unless Eyedol gets his own stage (and we know he wont) this may then mean his theme is also never heard.
Just a thought as it would be a shame that these perfectly good musical themes will be seldom heard in this mode as it stands.