I have a couple ideas for it:
It could be a RP which is kinda half journey, half kind of like Symphonia's plot; where you battle to get pokemon, badges, and about...half way; there's a darker, meaner plot on where the world is at stake, dun dun dun...
Well I say its kinda like Symphonia's because you'll learn the "world needs to be in balance again" as well as some foes; half man, half pokemon foes.
Well, I dunno, that's what I have on scratch. >.<