Super Mario 3D All-Stars UPDATE: N64, Gamecube, Wii Games COMING TO SWITCH?

Super Mario 3D All-Stars has been data-mined and completely leaked online, and all sorts of info has been found about this game and the question was were these games completely built from ground up or were these emulation.. well it has been confirmed that they are indeed emulated. Is this a good thing or bad thing and does it hint towards future N64, Gamecube, and Wii emulation on the Switch?