Yes kei & remi, Rirei is out from Muscats. Also, she edit her profile on twitter and bassically wish to have the same supporting fans on her new path... but, like you comment, it's really weird that production team don't post anything about her on the official account
Related to the previous post, I agreed in that the OG Muscats were "wild" in many aspects; NG is more "relax". I think the staff needs to give more freedom to the girls. Seriously, all of them have interesting things to share in variety to make the show & group more funny.
They can use as advantege the momentun that Shiori, Maririn & Nanami are getting as solo artist, the previous experience as idols that Yua & Usa get few years ago, our "dancing machines": Miku, Yuki & Shiori as well can bring something fresh and wild to this generation (Yuki practice a lot with Miku in routines, and Shiori proof that she can slay in dancing). They all can help to build cool things on both sides.
The work is more careful with this Muscats generation, that's clear, especially in the musical releases (production) and promotions. While in the show they are playing in "safe mode". Maybe the different agencies (AV-Gravure) are involved in somekind of way too, don't know...In front of camera our girls are pretty and funny, but in backstages they are totally dorki & playfull. It would be glorious they managed to show that more on screen