Personal Chat Nickname
Once you have a long list of chats in your history, it can be very difficult to keep track of which combination of people is which chat. (One chat is with five specific people on a topic, another chat is with four of those same people but also two other people. When reading down your long list of chats, which chat is which?)
Of course in some cases you can name a chat, such as, "X Dept Leads" or something else, if the purpose and nature of the chat is constant over time, but that is not the case with every group chat.
I would like to be able to give my group chats a nickname that only I can see so that I can recognize which chat is which without committing the whole group to a moniker that might not make sense to them and might not be consistently applicable as the conversations morph over time.