Now i know everyone would be pleased with this.
Newcomers
1. Bowser Jr./Shadow Mario
2. MegamanX
3. Zero
4. Shadow
5. Claus
6. Travis Touchdown- Suda 51 wants him in
7. 5th Gen Pokemon
8. Vaati
9. Lyn
10. Mewtwo
11. Roy
12. Micaiah
13. Samurai Goroh
14. Waluigi
15. Krystal
16. Little Mac
17. Tails
18. Grey Fox
19. Dixie Kong
20. King K Rool
21. Geno
22. Paper Mario
23. Issac
24. Viewtiful Joe
25. Sothe
26. Black Shadow
27. Black Knight
28. Saki
29. Zant
30. Knuckles
Bowser Jr: BJ is okay, but Shadow Mario isn't needed.
Mega Man X: No. Classic Mega Man should get in first.
Zero: Nuh huh. Third party series should only have about one character instead of multiple ones.
Shadow: Nope. Same thing as Zero.
Claus: Again, I'm going to say no. Not only is Earthbound not due for a character, but if it was, it would be Porky
Travis: Probably not. Just because Suda wants him in, it doesn't mean that much.
5th Gen Poke: Maybe. It depends on when SSB4 comes out really.
Vaati: Nope. Not a big enough villain. Also he isn't even being used anymore.
Lyn: I guess it may be possible, but she probably won't get in. FE probably will get about one new character, and said character will probably be from the next FE game.
Mewtwo: Lots of people want him in, but I really don't think its that smart of a decision to bring him back
Roy: Sort of the same as Mewtwo but worse off since he was a clone. There's a outside chance if that FE crossover thing gets made, but then that throws every FE character's chances back into the ring.
Micaiah: Micaiah is someone I wanted for Brawl, but her chances are quite low now. The only way I think she has any real chance is if there is no new FE game inbetween now and SSB4, as well as the fact that SSB4 comes out sooner rather than later.
Samurai Goroh: Finally a good pick.
Waluigi: That was a short good pick streak....No.
Krystal: Ehh....I guess she could work. Still Star Fox is a bit oversaturated.
Little Mac: Yes, this is a good character.
Tails: No, this isn't a good character. Refer to Zero.
Grey Fox: No. Refer to Zero. (Yeesh, is GF just people's default answer to a new MG character because he was in Brawl, and they don't know any other characters?)
Dixie: Eh, I think she's more likely than K.Rool, but I really don't think that the DK series should get a third character in its curent state. Maybe she could be paired back up with Diddy, though that would make people angry. I'm really not sure about htis one.
K.Rool: Sort of the same situation as Dixie, but with a few differences. One, he wouldn't be paired up with Diddy. Two, I hate this character a whole lot and don't think he's anything more than a generic bad guy template and thus has no business being in a game like this. That being said, he still has a chance.
Geno: Oh wow, no.
Paper Mario: I actually still believe that this is the most likely Mario character, since I believe that we will have a different version of Mario before a different version of Bowser. (Yes Bowser Jr. is technically different, but not by much) That being said, I guess I may have to factor Toad in there, but I really don't see the appeal of him.
Isaac: Maybe. It depends on GS3.
Viewtiful Joe: This actually isn't subject to that Zero thing I said earlier, since I think it would be okay for multiple series from one 3rd party company, as long as the series were seperate. Still I would think that there are better picks before VJ.
Sothe: Nope. Not a chance.
Black Shadow: I really don't feel like he would be a good character pick, and the only real suggestion people have for him is to just take Ganondorf's moveset, since there's really no moveset to give this guy.
Black Knight: A slower and stronger clone of Ike. That's what this would be. In other words, this isn't a great idea.
Saki: Eh, Isa seems a better pick.
Zant: ....Why him? Midna riding on Wolf Link is a better pick than him. He was the villain for like half (okay, 3/4ths a game) that turned out to be an insane patsy.
Kunckles: Nope. Refer to Zero.
Wheeew.
Anyways Rapier, the fact that the Yoshi series doesn't have many characters to work with means just htat. There's really nothing you can do about it. One idea that people don't think of, though it would probably be unpopular, is to make Baby Bowser a playable character, and make him basically act as a substitute for Bowser Jr.