As someone who pretty much only listens to soundtrack stuff, I'm not really sure what to suggest as a theme for my story. Probably be easier if the story in question actually had a name. But anyway... Hmm... Nope, can't think of anything right now. Maybe an idea will occur to me later.
Back when I actually planned to upload my story, I'd been sort of wondering about setting up a competition of sorts for people to suggest music themes for each of the major characters. The plan was for the winners to be traded an attempt at recreating that character in-game. Sort of an advantage of having all pokemon characters. Not that it matters since I no longer plan to upload, but anyway, I thought it might be an interesting idea. Maybe someone else will get some use of it.
That's so easy for me to do, really =P