Not necessarily. I think everyone knew Ganondorf would return... I don't think this or Marth really help the 35 roster at all. Ness... might.
it's not that these expected characters are helping the rob roster....it's that they are appearing on the character select screen in the EXACT ORDER that the leakers said they would.
this game will be epic, and SSE will be long. but i do have to say, if it turns out the way it looks like it will, the roster will unfortunatley be the lone disapointment in Super Smash Brothers Brawl, and the one thing keeping it from perfection.
I just hope for downloadable characters or something, or hopefully SSE will give us some insight on why Sakurai chose Rob, Wolf, and Toon Link over Ridley, Krystal, and somebody who is not Toon Link, then made basically every newcommer a starter.