It's always sad to see someone leave because of medical issues. I'm made a little more sad by the fact of her having been my second favorite and part of my favorite duo in Kobushi, but it's never something I want to see happen to any member. I hope she'll be able to concentrate more fully on getting better without having to worry about how fast she needs to go back to work or if she's disappointing a lot of people.
I hope they leave Kobushi be for a while before adding new members, or don't add any at all.
I'll just keep my opinions about the other BS to myself.