You know how in Super Mario Galaxy you can play as Luigi and it's called Super Luigi Galaxy? How cool do you think it would be to play as Wario. He would be slower and jump lower and closer than Mario or Luigi. He could be a challenge character forcing players to be more careful. One good thing he could do is kill enemies with spikes on their heads by jumping on them and being able to breath longer than narmal underwater. Just an idea I had. Have an awesome day!