Nintendo neemt Mii's erg serieus
"In a sense, licensing Mii is same as licensing Mario - Nintendo should grant the license when we can conclude that the proposed project is worthwhile. Should we allow any and all the licensees to use Mii license for whichever projects, Mii’s brand image will be hurt. Because we are not granting Mario license to any and all, we should not do so with Mii either."