Rosalina herself SHOULD absolutely appear in this game, I'll eat my Switch if she doesn't. Hopefully Yoshi does so, too.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.