For me:

Reasonable:

New Smash character reveal

Some sort of "Zelda All-Stars" collection for the series anniversary

Rerelease of the Four Swords Anniversary Edition also for the aforementioned anniversary

More updates for New Horizons?

Unreasonable:

Remakes/Remasters/Any sort of fucking rerelease of the first 2 Paper Mario games :vivian-shrug:

Super Mario Odyssey 2

Official confirmation of the Switch Pro or whatever it'll be called

Pikmin 4

Nintendo 64/Gamecube Mini