The SMB won't be titled #4. It will be a new 3D Mario game in line with M64, Sunshine, and Galaxies. However, your addition of a real second player sounds interesting, I like the coop mode where the 2nd player utilizes the gamepad.
But since they never used the number 4, I guess we could see that. Seems odd because in the Mario Kart series they went to a "7" which obviously included all the other MKs from various consoles that had no number designator.







