In a recent discussion about a question, a moderator moved the numerous comments to chat, and left a comment with a link to the room.
However, a bunch of us were left wondering why there isn't an automatic link to the room in the revision history, where we're told that a moderator moved comments to chat. I just found out that a link is posted in an automatic comment, but I think that posting it in the revision history is better -- diamonds are forever, comments are not. I've seen posts (no handy link, sorry) where the chat comment had been deleted, leaving a bunch of comments in chat, without a way for anyone to see them.
I mean, we already have the "mod moved comments to chat" in revision history; why not linkify that?