wow! that sounds like a nifty Idea, but before you start it... DO NOT USE GAME MAKER. No offense to gm users, but the program sucks. Ever heard of dark age? that was made with gm and it was choppy and poorly compiled. it wasn't the creators fault, it was the system. I have no Idea of what sphere is so.... enlighten me. I would suggest rmxp. I'm still learning coding, but once I do learn it, I'd be happy to help you.

I like the battle system! good job thinking that up, that wipes out any of my peeves about Pokémon.