This looks good man. I think this is gonna become one hell of a game. Love the title screen, the HG/SS tiles in the screenshot. But try adding some new in-game features to make the game more unique. Something like a PokéGizmo or a custom addition like Contests. I know they'll be hard, and you're not the best when it comes to scripting, but hey, just planting ideas on your head!
When I have time, I'll make a banner, too! Who's the mascot, by the way?