Well if that doesn't confirm MP4 as a cross gen game nothing does. Looks so good.
I don't play any of the Mario Party games, but even that had quite a few things that enticed me (not enough to buy though).
DKC - yes please.
Zelda - hell yes please (it was almost a bit like Animal Crossing as a combat skill, but also with elements of Trine, and yes it did look a little janky in places, so I was hella suprised at the release date being September).
Parts of DQ3 HD-2D looked forgeous, but some of those earlier shots in the reveal looked atrocious.