JWeinCom on 25 February 2020
It sort of would have to be the Switch wouldn't it? It does basically everything Nintendo's older consoles can do, with the exception of some of the Wii U's stuff (at least not without the use of multiple switch's), the 3DS's 3D mode, and some of the more niche features (microphone on DS and cameras on DSi/3DS/WiiU). It also has the best graphics of the lot so I can't really see an argument for anything else.
