No sequel to Super Mario World, no Sequel to Super Mario 64, no sequel to Super Mario Sunshine, no sequel to Super Mario 3D World, that's says a lot
Super Mario Galaxy got a sequel, and Super Mario 3D World was a sequel itself.
Or, the team of Mario Odyssey helps in BOTW2, so it will come in 2020 and Mario Odyssey 2 only in 2021
Is it crazy that I think that?
No, not really. :)