12-14-2017, 07:22 PM
Because the Switch is marketed differently to the Wii, Wii U or 3DS. It's more of a "cool" or "trendy" system and the Mii's don't really mesh with that idea, so they stuffed them in a corner rather than having them as the face of console itself. It's really part of a larger marketing strategy that has worked quite well in favour of the Switch.