Nested conversations. Mimic what Facebook does with comments...and anyone can reply to any comment anywhere.
Mmic what FB is doing with comments/conversations. Let anyone reply to any comment no matter where it is or when in the tree of the conversation. Allow a sub-conversation to be mirrored as a top level discussion as an option to de-clutter it but leave it in the original place so that the history of the sub-conversation remains intact.
Facebook is a good example. They only nest one-level deep though. If user B, C and D replies to user A, their replies will be nested under user A's reply. If anyone replies to user B, their reply will not nest under user B's reply, it will just continue to sit under user A's reply - but it would automatically tag user B, which is helpful.
Twitter and Reddit both allow infinitely nested replies (Reddit's may not actually be infinite, but it's got a very high limit if it isn't.)
Forums don't typically use nesting but do allow "quote-replies", which means it will automatically include the message that you're replying to in the content of your own reply. Personally I think nesting would be better, but "quote-replies" would be an alternative option.
This features is utmost important. In virtual world, we want to reply to a certain message from someone but was mentioned a while ago. This is productive and make everyone stay focus.
I find this feature essential in outlook email threads. It would be equally useful in teams conversations. Currently people just mention each other from older posts, turning the discussion into spaghetti code.
As the other people here say it would be very useful in group chats, where several topics are being discussed at the same time.
This would help a bunch in the chat groups as well, my team often talks over each other in our group chat
Patrick Schmitz commented
Not being able to reply to comments is a serious omission. Being able to reply to any comment is surely useful, although I think the nesting level should be kept limited but it should be at least one level more than it is now.
My kids are using teams conversations in ELA. It would be great if they could reply to each other directly through nested conversations v. @thisname at the bottom. It streamlines the conversations and make it easier to follow.
Dominic Afonso commented
i think nested replies would be great. also, promoting a reply and any following thread to a separate conversation be very hhelpful.