You know what they
should do? Add Pichu. Think it's a bad idea? Well, it's not. Since they have 5 character slots left, a ton of costumes ready, they could easily make Pichu possible. Simply use Pikachu's moves as a base, edit them from there, make new ones so that Pichu is a unique character. Besides, if Pichu is added to Project M's roster, this would mean it will have every character in Smash History (up to Brawl). I hope they will add Pichu before or on 4.0.
They could easily edit the whole percentage problem and how it hurts itself. Who knows, if this happens, Pichu could be high tier?