Shall we speculate on the Pokemon's moves? (Yes, I'm warming to the concept.)
Down-B as switch, Neutral-B as Razor Leaf/Water Gun/Flamethrower, Up-B as Solarbeam/Hydro Pump/Seismic Toss, Side-B as, erm, no idea.
I'm thinking the moves will be based on how they appear in the anime, thus giving...