Never in a million years did I think I'd ever play another 3D Mario game that could come close to that SM64/Galaxy1/Galaxy 2 tier of quality after the half-assed 2.5D bullshyt that was 3D World, but goddamn it if this game doesn't do it. It's got the same level of inventiveness and charm as those games while arguably being more rewarding for platforming purists and players that explore. It's essentially Banjo Kazooie (which I never really liked all that much as a kid) turned up to 11, while still retaining the tight controls and creativity that are only synonymous with Mario. Easily my game of the year and probably game of the generation going forward.
I'll just say this: we NEED a Super Mario Odyssey 2 this gen like we got with Galaxy 2 on the Wii. Please Nintendo, make it happen