I just played some Super Mario Bros Wii, partially inspired by your class. What are the chances I can get you to expand it to a 5-level PrC to incorporate some of the Hammer Bros variations like Fire Bros and Sledge Bros and Ice Bros?
Don't forget Boomerang Bros.
I was thinking about it. I'll start work on a bunch of variants now and edit them into the first post.
Homebrew Please feel free to PM me any thoughts on my homebrew (or comment in the thread if it's not too old).