If there is an Animal Crossing game for the NX, I'd want to find out more details about it before I bite.
As for Pikmin 4, I never really got into it so I guess The Legend of Zelda: Breath of the Wild is the only game I know of that's planned for the NX I'm interested in getting. I'm debating getting its NX version over the Wii U because it'll likely be better.
Just Dance 2017 is another that I'm curious about, but I might get that for the Wii U instead.