I think she peaked when the band-aid story got subbed and like you said she kinda lost her place within hololive as more gens came out. The only thing matsuri has going for her is that she's a gamer on apex and her mom. For me at least.
I also wish she'd just use her normal voice like in this
video too. I would have been a fan.
But with her now doing nsfw content and being more open to idea of it and making somewhat better content. I think she'd kill it if she was in another group that can let her be herself and just play towards her strengths rather than changing the way she speaks for the sake of trying to sound cute and play pretend idol.