Yes... they should a "Golden Sun's Greatest Hits", because I would totally bye the music. They should also do something promotional like adding a band's music for the new theme or something >.>
And I might recommend
Atarashii Sekai *ahem* since it fits the game, or pretty much what the new game will be about.
I've also thought of something else- if Alchemy is reintroduced to the world of GS, then there would be a new mode / power or something cool like that probably
