A character can have support even if that character isn't particularly powerful, canon power doesn't matter in Smash. It's not like people are actually suggesting Skull Kid without the mask anyway. Also, it's not like Skull Kid has zero fighting potential, he has just as much as some of the other characters did pre-inclusion. That said, I don't actually think he has any sort of chance, but he could hypothetically work, though it would be his MM incarnation, with the mask.
This is true. What i'm referring more to though, is how he is being argued as more important than Sheik because of appearances or whatever.
Sheik is still around with the many remakes of OoT, while Skull Kid has changed his role in almost all of the games. The only game in which he is a "villain" is Majora's Mask. Otherwise, he really isn't that important, other than being a VERY minor character.
While a Majora's Mask remake could happen, and it could boost his chances, I just don't see it.
Anyway, to keep onto the subject of the thread...
Mario; 0-1 Characters. With the smaller expansion this time, I don't think we'll get more than one, if that.
Donkey Kong: 1-2. Definitely K. Rool, maybe Dixie if a 2nd character is added
Yoshi: NOPE
WarioWare: NOPE
Zelda: 0-1. Ghirahim (as much as I like him) is this gens Zant/ Midna. Skull Kid is meh to me.
Metroid: RIDLEY ( or Dark Samus if they refuse to include Ridley)
Kid Icarus: 0-2. My bet is on just getting Palutena, but there is a chance they could get two from the great pool of characters from Uprising. Or an upsetting zero =/
Retro: I'm assuming Takamaru and Little Mac if he is considered retro. But i'm not sure otherwise.
Pokemon: 0-1. I really don't think any Pokemon rep will out do Mewtwo. If they do add another, my guess is going to be Zoroark. I don't see Lucario going anywhere.
Star Fox: HOPEFULLY NOPE
Fire Emblem: 1-2. I foresee Roy coming back, but if not him, i'm sure Krom will be added.
Mother: Meh... I don't think they need another one
F-Zero: 0-1. I really don't see the need to have another F-Zero character because of the lack of games in the last 10 years. But Goroh if we get one.
Pikmin: Fine as it is
New IP's: I'm not going to guess how many, but I would say Shulk leads the pack. Then you have characters like Stary, Isaac, etc...
3rd Parties: 1-2. I'd like to see Snake and Sonic stay. I can see Megaman and a Namco character getting in as well.