Here are my personal hopes/predictions:

With all the ACE members & all the ONF members (minus the Japanese member) enlisting at the same time, I hope they can come back stronger than ever and have a huge resurgence in popularity. I think we're starting to see that with Kard, now that J.Seph's back & their first week album sales tripled from last comeback.

Astro: I think they'll all renew, and do one group comeback per year. Eunwoo will continue acting, and the others will continue releasing subunit/solo music (and I hope we see MJ cast in more musicals once he's back from enlistment).

Pentagon: I really really hope Cube is able to hold onto all of them, but I know that Pentagon can continue even if they lose 1-3 members. We've seen them perform as anywhere from 5-9 members, so we know they can adapt. But I also know how close they are, and that they likely want to stay together. Regardless, I predict Hui/Kino/Yuto/Wooseok will continue writing music, and Hongseok will keep acting.

Victon: I predict the members will want to continue, but it's a question of whether IST will continue to invest in them. Since they'll be debuting their new bg from the show A B or What, I'm concerned they'll do a Source and replace Victon with the next generation bg. But Seungwoo and Hanse's solo albums did really well, and Byungchan has a burgeoning acting career. So I'm hoping that all 7 stay with IST, even as Seungsik and Chan need to enlist next year (and Seungwoo returns in January)....