yah u seem kinda right. after Yossie gone, miki doesn't really have a reason to stay. maybe she wanted this to happen....but not too much so she will get fired... just enough to leave MM and continue on with her GAM and solo career. i dunno even know if she likes any of the other girls in MM other than Yossie.
Miki seems pretty good with Eri nowadays, judging from their interactions on Hellomoni
i don't this scandal is a big deal actually, somehow it feels like the whole incident lacks the urgency that usually comes when it concerns MM members' negative reports. UFA is taking its time in dealing with Miki, unlike their usual decisive actions when big matters happened (eg. Nacchi, Aibon, Tsuji). so i guess they have options for Miki and she will stay on in something, unless she wants to quit the entertainment scene altogether herself.
i can't really imagine Ai+Risa as leaders... with Yossie graduated and if Miki goes off as well, it just feels like there's no more adults in the house?! LOL. yet, i think many people will support Miki leaving MM, she never really belonged there anyway.