So...with MUCH thought, I made an "expected" roster. This roster is a bit different from the norm as it involves DLC characters. I also used the Sal leak or whatever it's referred as in order to fill in spots. I'll explain a few of the questionable picks after you look at the roster. Here it is:
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As I stated earlier, I used the Sal leak to fill in some spots. I know the leaker said "Chorus Men" however we all know that Sakurai said he had trouble with Ice Climbers a duo, but with Rosalina and Luma it's quite obvious that the duo problem has been fixed. I can't possibly imagine Sakurai saying, "Well guys, we found a way to make a duo work...now let's figure out a trio." It just seems impossible. Not to forget that this is the same leaker who used the terms "Animal Crossing Guy" and "Pokemon from X and Y" to say Villager and Greninja so it's very possible that the leaker meant Marshall but used "Chorus Men."
King K Rool,
Isaac,
Krystal and
Takamaru were not on the leaker's list but the same can be said for the already confirmed Rosalina and Luma so the possibility of the leaker not knowing other newcomers is very possible and these 4 are the most likely newcomers.
K Rool as he appears to be the fan favorite and most wanted.
Isaac, in similar fashion to Little Mac, was heavily requested for Brawl but was reduced to an unlockable Assist trophy. It appears that Little Mac will be a starting character and in Brawl he was a starting AT, so it's possible that Issac being an unlockable AT in Brawl is an unlockable character in Smash 4.
Krystal has the pattern of Sakurai adding a new StarFox character every game and with many fans wanting Krystal to show off some character diversity from StarFox...so she seems likely. It also seems like a fan consensus that
Takamaru is the most likely Retro addition.
There are four 3rd party characters on the roster and for good reason. With Namco working on the game, it would seem odd if Sakurai left off arguably the second most recognizable videogame icon,
Pacman. Now
Bayonetta has the last spot for obvious reason. Nintendo owns the exclusive rights to Bayonetta 2 plus the fact that Sakurai did visit Platinum Studios and we all know that he didn't have to do that for Wonderful 101 as Nintendo owns that IP as well as the recent miiverse post showing of Wonder Red as a trophy. I doubt he went over there for trophy designs! Also, what better way to promote Bayonetta 2 than putting her in Smash. And they can put her in without having her clothes stripping off to attack (kinda the same way how they made sure Snake didn't use guns.)
Finally, let me explain the bottom line of characters. I'm 100% sure we will be getting downloadable characters and I'm near positive the first one will be
Mewtwo. I say this because what way will Sakurai be able to hype up the Wii U version when it comes out months after the 3DS version? Smash's main appeal are the characters. I doubt a new game mode would be enough to really hype it up so it would need something BIG and what would be bigger than
Mewtwo? I also think this will be a way to hold off on certain newcomers as well as give Sakurai and his dev team more time to alter the semi-clones who really need to be better differentiated from the originals that they clone. The only reason
Toon Link can be left out of that equation is due to his game physic being VERY different from Link's, though I wish his specials were different.
Ike is in the DLC as is seems to be a pattern to have the new FE rep replace the old, but Ike has an original moveset so he could and most likely will comeback that way,
Roy is also very possible for DLC.
Anyways, this is pretty much what I honestly think will happen.
Oh yeah, let me address Ridley. I've seen a lot of people say Ridley can still be playable since Sakurai didn't show Ridley's full body. Can that be possible? Yes. However, no one mentions the fact that Sakurai was using the Wii U version to showoff everything with the exception of 3DS exclusives like the 3DS stages and Smash Run.
So with the Wii U version nowhere near as complete as the 3DS version it is very possible that Ridley's development as a boss wasn't anywhere near complete like the Yellow Devil. So I lean more towards Ridley NOT being playable.