your mod really is amazing man, though im curious does the DS have the power to have an entirely seperate new character? i feel with a dedicated team it may be possible to dummy out the white door in the character room into a purple waluigi door maybe change the glowing white bunnies purple and the final gives the waluigi key? it'd probably take years of work to pull this off, especially if the team were to give him a new unique playstyle like the other characters maybe he'd be really fast and jump high, but take double damage like in net64?
