TL;DR: Bring something new and creative. I think a lot of us are tired of seeing the same cookie cutter Pokemon fangame formula.
EDIT:
Sorry to have to do this about an hour after your introduction. But I hope it will help you in the long run. Rejuv is a game that basically saw Reborn and took everything, and I doubt most people could do that better then Rejuv while still adding an interesting spin on the game.