About the Tom Nook discussion...why does Animal Crossing even need a 2nd playable character in the first place?
Something I think the Smash fanbase should realize is that, yes, there are series that lend themselves well to Smash Bros. characters like Mario, Zelda, and Pokemon...but there are others that really don't, like WarioWare, Yoshi, Pikmin, and of course, Animal Crossing.
AC isn't structured like most series in Smash. It doesn't have much of a story, or sidekick or villain. It's a carefree, life simulation series and we're honestly pretty lucky to even get a character from it at all, especially after what Sakurai said about AC characters during Brawl's development.
Outside of Villager, who's is of course, the main playable character who represents the player, none of the additional Animal Crossing characters really have significant enough roles to be playable in Smash Bros. They're all minor NPC characters, essentially.
I understand that AC is a huge, popular series for Nintendo, but I don't think it should get more characters just because of that. It's not that it doesn't "deserve" or "warrant" more characters because of its size or whatever, it just doesn't really have sensible additions besides the Villager, who represents AC perfectly.