I am a worker for Nintendo and am helping with the development of the new Super Smash Bros. games for Nintendo Wii U and 3DS. I came to give you guys a few bits of information on some of the characters that we have been working on:
Veterans:
There were no cuts, not even Snake. Roy will not be returning but Mewtwo will be a rep for Pokemon and the Trainer has been changed to coincide with the announcement of the remakes of Pokemon Ruby and Sapphire Versions, the trainer has a model for both female and male, just like Wii Fit Trainer. The trainer has Mudkip, Grovyle, and Blaziken.
Newcomers:
It was really interesting when we first heard the list of newcomers, because a few characters who many expected to be playable did not make the cut. Examples are Little Mac, Ridley, and Dixie Kong.
Aside from the newcomers you have seen, here are the remaining ones:
-Chrom
-Takumaru
-Shulk
-Professor Layton
-King K Rool
-Palutena
-Captain Rainbow
-Wonder Red
Oh, one last thing that I will tell you. The Cave of Origin, from Pokemon Sapphire and Ruby versions is a stage, with Kyogre and Groudon as stage hazards, another reference to the announcement of the remade games.
That's all I have for you now.