I had an idea of merging Naruto and Bowser. Having Kamek show up shortly after it happens and explain/train Naruto Koopa. The Elemental Nations and Mushroom World become linked Warp Pipe. Naruto having command of the Troopa. Sasuke desperately trying to get his hands on power-ups.
Smash Bros. could be brought in.
Smash Bros. could be brought in.