Well I hope your right on that...
I'm just very pessimistic, oftentimes...
Let's just wait and see...Lucario couldn't have sparked it because I knew he was going to be in...
Ness might of, but I thought Ness was going to return...But HOPED Claus would instead
Lucario was an obvious addition because a vast majority of its competition had completely gone down the drain by October and more logs have been added to the fire since: Deoxyes, Gardevoir, Munchlax, Blaziken, Meowth, Darkrai, etc.
Ness coming back does fit into the the Holes theory because Sakurai does appear to be giving every franchise that's been around since the first game at least one more rep but I was more then certain that Claus was going to be that other character representing the Mother franchise.
In corraspondance to the Holes theory, the Mario franchise would have to be given at least one more character even if Luigi is completely remade. For the Pokemon franchise, the Pokemon Trainer and Lucario, both completely new characters, seem to have replaced Pichu and Mewtwo and this fits the Holes theory. If Ganondorf and Young Link are completely revamped, they will essentially replace themselves and this will fit into the Holes theory too. Ike and Marth being the only FE characters fits into the Holes Theory as well. Wolf being added and Falco coming back would fit in the holes theory too but why in God's name would it be Wolf when Krystal has 1001 more things going for her? Captain Falcon being the only F-Zero character would not fit into the holes theory unless he's been completely redone for Brawl. (There's also a decent amount of evidence that heavily suggests he's in the starting roster and hasn't been be remade from the ground up which blows a big gaping hole in the theory presented by at least two of the people you mentioned because they said he did.)
Well, those are my thoughts for the moment...