How is this roster possibly worse than Brawl's? It's pretty much Brawl's roster with more.
Assuming Wolf, Lucas, Ice Climbers, and Snake really are cut, what are we really losing? Wolf is great, but did people really clamor for him as a newcomer in Brawl? His inclusion was kinda "eh," and his role in the Star Fox series itself isn't even that impressive. He's an obligatory rival that appears in half the games for a fight or two, and doesn't serve as a primary antagonist. Even when he's in games where he has a greater role, it's still not as large as the core Star Fox team.
I love Lucas, and I love MOTHER 3, and I hate the prospect that those elements may be diminished. But we all knew that, if it came between Ness and Lucas, Ness is more traditional and more recognized internationally. Additionally, Ness and Lucas share pretty much the same exact pool of powers in their respective games, so we're not losing anything major playstyle-wise.
Ice Climbers are Smash traditional at this point, but does anyone really care about the character? I thought Ice Climber was an "okay" game, and their playstyle in SSB was pretty cheap. If Duck Hunt Dog is real, I think that'd be a better character from a better game, not to mention Pit and Little Mac.
No one expected Snake in the first place. He was a great addition, but even now, no one really attributes him to Nintendo save for SSB itself. I'll miss him, but it's not the worst loss we could have. It's not like we lost Meta Knight or Diddy Kong or someone truly important to Nintendo franchises. In fact, I don't think any of these potential cuts are as bad as Mewtwo's.
Stack these cuts against the fantastic newcomers we have gotten. How could this roster possibly be worse?