Man the more I see of this game, especially in the hands of pros fighting 1v1, the more I really do think this will be the ultimate Smash game.
Also, two pet theories I have:
1. Waluigi will be the one of the first DLC characters, if there's DLC at all. I would estimate the final roster is already locked in place and they're basically just tweaking/balancing things right now. IIRC Brawl went gold in October, two months before its December Japanese release. If that timeline holds true, there's only three months left until Ultimate goes gold. But with DLC, hope springs eternal, and not only has Reggie confirmed Sakurai will hear about all the Waluigi stuff in the west but Mario Tennis just came out, which is where his character started. I don't care either way, I'm actually good on Smash characters now, but it's just been something I've been thinking about.
2. There will be a story mode with cutscenes of some sort. Probably not as in-depth or self-serious as Subspace Emissary, but the Ridley trailer ends in a peculiar way I feel -- we see Ridley do his Final Smash on Samus, which blows her ship and her up, but then we cut back to CG and it's the same environment as the beginning of the trailer. She's also jumping out of the flames here (in ZSS form) and begins to counterattack Ridley. The trailer's first CG part didn't show Samus getting flamed in that environment, so it seems like a case of creative editing. I dunno, I feel like this is definitely teasing something, because there's otherwise no reason for the ending piece of CG to exist.