Wii Microphone is really necessary.

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Fastrabbit09 said:
if Nintendo is smart, it wouldn't come with MK, instead it would be it's own thing for 20-30 packed with a small game a la wii play and wii zapper

then we can read countless posts about how that game's sales don't count since it came bundled with a headset

 No it could come with mk or seperatly.