I'm not sure a crossgen period as extensive as PS4/Xbone got would be wise for the Switch/Switch 2; Nintendo's audience are notoriously less easy to convince to upgrade compared to the PS/Xbox audience, if all your big first party games keep coming to the old machine for the first year or two, you risk Switch 2 failing to get off the ground.
A better idea would probably be to treat it the way they did 3DS/Switch back in 2017-2019; lower priority stuff like the already announced Peach game and Luigi's Mansion 2 remastered keep coming to Switch for a while, but the big blockbusters are exclusive to the new machine.








