>>94216611Unlike Rosemi (and admittedly many chuubas), Mint and Doki intentionally cultivate very specific audiences.
Mint is a very traditionally cutesy girl chuuba that also has it in her to be absolutely insane (or freaky, as wisps are sure to call it). She's more of an idol freak than the majority of Holo who only engage in idol activities because it comes with the job. She's a seasoned performer with a lot of talent and experience when it comes to music.
Doki is the antithesis to the traditional female chuuba, a gaming-focused event spammer that isn't good at singing or performing but excels at bringing people together and back-and-forthing with them on stream in some way, shape, and form. She's here to have a good time and she brings energy and vibes to collabs that makes the atmosphere more fun and comfortable for the streamers involved (note that I said streamers, not the viewers)
Since these two have very specific niches and audiences, they effectively filter the chaff out of their viewers. Those who linger are the ones that stick around for anything, so they are both able to feel comfortable with knowing that they have a core audience to watch practically all of their content. That baseline allows them a comfort zone of branching out and trying new things.
Meanwhile, I couldn't tell you a single specific selling point on most of Niji EN's remaining members. Not even the ones that I kinda like. Rosemi is cute but generic, same with Maria. The most unique ones they have left are Aia and Scarle; they're the ones raking in the money for a reason.