I feel like this was one of those years where management focuses on other groups and lets MM coast along. I think this year was all about Juice=Juice/Angerme/Beyooooonds in the music and promotions department.
Angerme had new members and several member graduations.
Juice=Juice also had two grads and some new members.
Beyooooonds got their big debut huzzah. Even
Country Girls, with their upcoming disbandment, have gotten quite a few promotions this year, considering they were cast aside after Momo graduated and then Yanagawa graduated.
MM and the Factories have largely been on the back burner riding on their own momentum, except for bones here and there. January will be be nearly a year between Tsuabki's major single releases. MM had Rock in Japan to bring in interest, as well as the new gen whom they've been slow to really promote. Kobushi seem to really be in the backest burner after all their scandals, but at least they got 1 single and an album this year.
I almost wonder if management will consider possible-Olympic promotions to be enough for MM and be lazy with them next year, as well . Beyooooonds will likely get more new-group treatment, Tsubaki will resume motion with Kiki back. The only thing I feel will maybe bring MM some good promotion (and music) will be the graduation of an older member or two. Personally, the last song I truly enjoyed was Dokyuu no Go Sign (Oct 2017), and the last full single I liked was 13ki's debut (March 2017). Over 2 years of "meh" in my opinion. Even during Platinum Era, I at least liked the songs even if the promotion and music videos were craptastic lol (lookin' at you Seishun Collection outfits and soccer field).