I didn't want to be hyped this, but it's got me a little bit
I'm still going to wait to see whether they have to have a decent set of items (brawl's were all overpowered or useless), a non-nightmare-inducing adventure mode that that only uses assets from existing franchises (the Yellow Devil in the Mega Man trailer looks like that may be the case) — so that we get a good crossover "story" that the series has deserved for so long — and competent online.
Glad they finally have a train level, even if it's only on 3DS.
Any possibility that Villager can have their appearance be customized? I wonder if players' Animal Crossing: New Leaf character can be imported.