I dunno that would be kinda broken.
Please never say a move would be broken if specifics are not given.
If Bowser's B-Side was described as "Bowser grabs the person and jumps way up into the air. He can control the movement in the air before they come down." That would sound broken. But the move really isn't.
What do people think about new/returning clones? This isn't a popular suggestion, but I wouldn't be surprised to see a roster much bigger than expected, but w/lots of clones. I thought I'd throw some suggestions out there. This isn't something I'd really like to see, but when it comes down to it, I'd rather see a bunch of last-minute clones than a single last-minute character. I usually won't mention who the template is because it should be obvious.
Dr. Mario - Generally nominated as a costume for Mario, Dr. Mario may return as his own character. Sakurai has shot down the idea of Doc as a costume before.
Daisy - Improbable, but if Sakurai decides more Mario reppage is needed, he may quickly bust out a Peach clone in the form of Daisy.
Dixie - Again, this could easily happen due to DK needing more reppage, seeing how DK (NOT Kirby or Metroid) is Nintendo's #4 series.
Funky Kong - Odds are very, very, very low. But hey, he got into Mario Kart, meaning Sakurai might notice him.
Toon Zelda/(Tetra,Toon Sheik) - Technically, Tetra wouldn't be a clone, but Toon Zleda would be
unles OMG we gaev zelda a swored and toon zelda inharitid zelda's old moovset. This might have problems, though (Zelda/Sheik invlves a lot of kicking)
Dark Samus - This will probably only happen if Sakurai decides to compensate for Ridley not being playable (If he doesn't get in). It's not completely logical, but hey, neither is G-dorf.
Louie - This could happen if Louie makes a re-appearance in a new Pikmin game.
Black Shadow - Samruai Goroh seems very probable for SSB4, and I doubt they would both get in, but stranger things have happened.
Pichu - If HG/SS is the most recent Pokemon at the time of SSB4's release, this is a certainty, but I think Pokemon will have moved on by then.
Roy - Roy gained a lot of popularity due to his appearance in Melee. If Sakurai's bored he could easily make a return to Smash.