Judging on bias or lack of bias is virtually impossible, since none of you actually know Sakurai, assuming he's going to be the director. One could theorize that he is biased towards Star Fox by giving the series so many playable characters, but you could also point out the fact that he didn't know anything about the series post N64.
He could view Bowser Jr. as a type of clone, and that may cause him to not include him, or he could just include him anyways, clone or not. Certain people thought that Ike would be a clone, and certain people thought he wouldn't be one, and in the end he wasn't one. Certain people thought Toon Link would be a clone, and certain people thought he wouldn't be, and it the end he was one.
As far as Kid Icarus goes, there is also no real telling what Sakurai will do in regards to his representation in Smash. He could be biased towards the series and give it new characters, or he could take the stance that he had back in Melee about Kirby characters, and not want to try to overcrowd Smash with his own work. As it stands, Palutena, Medusa, some unknown character, or even the Eggplant Wizard could make a perfect Smash edition once Uprising is released, but we can't actually say anything about it until that happens. In the original game, Palutena just granted Pit some powers, and had to be rescued. In the original game, Medusa was just a gigantic face in a wall that shot snakes. Their new roles could be just as bland, or they could actually be more than that. As of now, we have no idea though, so its nearly pointless to speculate on how this will change things, especially in regards to playable characters.