Not OP, but threading. So many collaboration tools I've worked with are indistinguishable from the comment section of a blog or newspaper. The vast majority of the comments are useless, with people arguing over ridiculous things, but there's no natural segregation of useful comments and useless, so all you can do is scroll about hope to encounter something worth while.

Thanks for sharing that, I'm a fan of threading as well but see a lot of Slack groups that operate as though it wasn't an option

Check out the chatty at shacknews.com The immediacy of irc with threading to keep things readable.

Well, I only have experience with chat apps, but I think it's the advantages of chat (rooms/subs basically for teas + private messages), but without the expectation of immediate feedback. Also probably great searchability.

Thanks for sharing your POV