Sam, have you played the Mario + Rabbids game? I think it was you you said you were interested. I have enough in my Christmas fund to get either that, BOTW, or Splatoon 2. I think the former peaks my interest the most, but the girlfriend would have more fun with Splatoon or Zelda, so I'm conflicted.
I've not played it but I have played Zelda and Splatoon so, if you want to emulate your heroes, you know what to do.
I don't think you can really go wrong with any combination.