Characters you want in the next Super Smash Bros.

[Lethal]

The Mii could have so many great moves, whilst still not be over powered. His final smash could be a mock Wii Remote Home button, and the remote goes over to the Quit button and resumes to the battle, the characters caught in the mock quit of the game are dealt a massive amount of damage.
He could throw letters at people, like the mail box thing on the home screen.

Also, what would be great for one of the Assist Trophys, for a laugh, just like the NintenDog, could be the chinese/japanese guy from Brain Training just talking and talking and talking and filling the screen up with text for about 20 seconds.

We also need some more Metroid Assist Trophies, like the Metroid Prime, or Taradus, the rock monster in 'Metroid Prime' of the Gamecube.