The one thing that immediately sticks out is that Wolf was cut in favor of Krystal. I really don't see that happening. Wolf is more important to the series over all, is a veteran, and has a mostly unique moveset (save for the specials, of course). I'd say just keep Brawl's StarFox roster.
The other complaint is the removal of Lucas and Ike. Mother may be a finished series, but I doubt they'd reduce its numbers when there's really no one else to add, sans maybe Porky. That being said, I think Lucas will definitely stay. Plus, although it probably doesn't mean much, Sakurai's never cut a starter character before.
With Ike, I definitely think Fire Emblem can warrant three characters (heck, it almost got just that in Brawl, considering Roy was also planned). Plus, Ike is extremely important to the series as a whole, when compared to most other Lords in the game. So I'd make the roster Marth, Chrom and Ike, personally.
And I honestly don't see Lucario being cut either. That Mega form could make him even more unique, haha. Plus, Pokemon is a giant series. It can definitely warrant seven characters, so Brawl roster + Mewtwo seems like the way to go.
Then you also took out Toon Link and Snake. However, they are much more understandable than the other cuts, as much as I doubt their exclusion (particularly Snake's).
As far as your other additions to the roster, props for adding Little Mac, Chrom, Palutena, K. Rool, and Ridley. They're my five most wanted newcomers. :D
Over all, definitely not bad. I just don't think some of those cuts will happen. Definitely an 8.5/10 on my arbitrary scale.