Pokémon still will be a very dominant franchise character wise in Brawl cause of the Pokémon Trainer. 3 Pokémon in one, and surely Jigglypuff and Mewtwo will return. Maybe we also get a newcomer for the Pokémon franchise, who knows?
I still think equality for all franchise is what Sakurai should aim for, not what franchises are selling the best. Thank god he won't... Otherwise we'd have Daisy, Waluigi, Bowser Jr. (though still likely) and Petey Piranha playable and who the hell is waiting for that?
If Kirby get's 3 characters, I hope Donkey Kong, Metroid and at least Star Fox get three characters as well since they are the more major franchises. Three Fire Emblem characters would also be really nice, but I'm guessing it'll be only Ike and Marth. F-Zero shamefully will probably have just one rep, same for Mother... And I'm guessing Wario Ware will only have Wario as well, though I can live with that since it's a new franchise in SSB.
Kirby, DK and F-Zero should've had their second character in Melee already. But since we're (probably) not getting another F-Zero character, I'm hoping that at least DK will get King K.Rool, especially cause the series is so neglected after Rare's department.
Anyways, King K.Rool for Brawl!