Eggman Chance: Both zeroes.
I give a 1% chance of another 3rd party character from an already repped franchise, and if we got one, it would almost definitely be Tails. Other third parties, a LOT of other third parties, should get in before him. Might make a good boss though...
7 Pokemon characters:
Chance:75%
Pokemon, over all other franchises, deserves the most characters, as it has the most to draw from. Other franchises, like Mario, Zelda, etc., they are character driven, you only have so many to draw from. But Pokemon? There are sooooooo many that could be made into playable fighters, there is so much potential for so many. We had 6 in Brawl (Sakurai himself said they counted as seperate characters), we will definitely have at least 6 this time around, 7 definitely seems plausible. I consider Mewtwo a shoe in, Jigglypuff has a strong chance of returning, and we've had 2 Pokemon newcomers with every iteration.
Want: 100%
#Sceptile4Smash
I want Sceptile, one of my favorite Pokemon, and one of few I have wasted hours trying to get a Shiny (Which I succeeded :D ) I would like for Sceptile to replace Jiggs, but I'd prefer to get 7 so everybody can be happy.
Plusle/Minun Predictions: 1%
Their time passed a lonnnnnngggg time ago.
OP Character Predictions: 60%
It is nearly impossible to perfectly balance a game, there will always be characters that have an advantage over others.