You fools are armed with the knowledge of the twins' past with 99.9% authenticity yet you still lumber around doing nothing and make guesses about how they act and what they can do. Me personally, I'm gaining a headstart in familiarizing myself with them by consuming as much of their past content as possible.
They seem to be able to carry streams just fine even when the chat is barely moving at rates of one message per 10+secs so I'm not worried about that, though that can always be affected by being nervous early on.
The well endowed sister has that soft big sis charm with a laugh reminiscent of Aki at times. She likes to giggle so it's a blessing. The flat sister has a peculiar speech articulation but is pretty cute, her singing vocals has more power albeing a bit rough, vocal training would do wonders. I like their song choices, they know a lot of rare songs though I'm afraid that might be limited by perms in Hololive. They seem to plan the verses each other sings and which one to harmonize on, it's really great. One of them would sing normally and the other voices the echoes or sound fx between verses just to make the song more fun.
This is often obvious on fast paced songs like this classic denpa, pay attention to the dynamics between the two:
https://files.catbox.moe/rce8hx.mp4Thanks for attending my ted talk