I want to buy it day-one because it would be nice to see a Nintendo console building an audience from day-one, last time I did it it went kinda bad because one was Wii U and 3DS peaked for me first year, it's been a while so I will consider it seriously.
That being said I don't expect much, these days is better be skeptical and PC is where I play anyway, I hope this time they will finally add achievements system but I am not holding my breath for it as it will probably not happening.
Let's see how much time happens until new Zelda and Smash Bros are announced, I think is kinda obvious a new 3D Mario is probably comings this year for holidays, hopefully is open world because is been 7 years since Odyssey and I am interested into how an open 3D Mario game could work.
Anyway, looks nice, I am not excited but I still want it, and that's enough for me.