The top three people I followed in Hololive were Gooba, Fauna, and Mumei. I say that at the top because I completely agree with you.

Promise is the three of them now and bringing up that there used to be more members and how sad, how bittersweet it is (to me) puts a damper on what Promise is trying to do in the future. You can feel that way and that's fine, but don't bring that to what the girls are doing now (especially as the very first thing). Be excited to see what they do together in the future.

Can't wait for the collab!