The main saving graces is Ridley and you didn't take out any SF characters. Takamaru is decent, and Little Mac is alright to.
The problems: -No Ike. Again, FE can have three characters. Brawl was supposed to. Chrom wouldn't be a clone of Ike.
-MegaMewtwo. First of all, not only does it not really make sense because it's a Mega Form which would most likely be a FS, but it looks so much lamer than first form Mewtwo which would also make it harder on the developers because they could just use Mewtwo from Melee and tweak him. However I have a feeling you made that before MegaStones were confirmed, so I can't be too mad about that.
-The rest of the newcomers are awful. And no Lucario, but Meowth? Tsktsktsk. Fine, fine Palutena isn't awful just overrated beyond belief.
Otherwise, I'd be OK with this. I wouldn't be blown away, but I'd at least get one character I really wanted like Melee and Brawl (Ridley in this case).