Currently, it is really confusing to find all new chats because some are in thread (and hidden/collapsed) and others are in the main thread. I hate the thread opening on the side, it would be better if it was just inline with the rest of the chats so it doesn't reduce the chat window even more.
Another request would be to allow chats as a view or as a pinned item in the area they are associated with. We attached a chat to a list and you can't see the chat in the list, you have to go through the chat area to see it. Very frustrating.
Please update the design of these, otherwise chats are not very usable.