They would have to provide a very interesting move set for the Mii for me to not be sour about it in the end.
Anyways, the wording of that article makes me think those are six newcomers being announced at E3, not total. So they might come out of nowhere this week like the Trainer did today.
I like little Mac. I don't want anymore third party characters. I want to see Toad, Birdo, A female pokemon trainer, a ness female etc. Also take out wolf and lucario, they suck.
This games been in development for like a year now, and Sakurai has stated many times that he didn't want too many third party characters, so I think that list is fake, megaman and sonic will probably be the only 2