[moved question from 'Happy B-day' thread to here because it seems more appropriate
]
I have a question about Miki, Why exactly did Tsunku put her in MM with the 6th gen? (*blush*I know this happened AGES ago, but I have never found the answer)
I thought she was rather popular as a soloist (got to love"Aenai Nagai Nichiyoubi" and "Boogie Train")... 
Miki was brought into the group to create a bit of tension among the members, and in that aspect, the members would have more competition (and in that sense, they'd all do better). Due to Miki's experience and straight-forward attitude however, a few of the MM girls actually disliked her. (Most noted on the years 2003-2004.)
Another reason however is to make Miki experience being in a larger group and to improve herself more (since she was already in a group once, Gomattou. [Minus the Shuffle groups])
In short, Miki was put in MM because she rocks, but she needed to rock more (to stand out, and THAT she did.

).