Direct Message change idea

I have an interesting idea I would like to bring forth for discussion.

I believe that it might be cool to be able to pin certain direct messages within your DM and friend chats. 

I propose this because I had a chat (not a server) with two other people, and I couldn’t find it after a month (because I had renamed it and forgotten the name I changed it to), and thus had to create a new group chat. And wouldn’t you believe it, I found the OG chat, now I was stuck with two.

TL;DR Create a feature of the ability to pin Direct Messages.