Here is My Idea - That in the in-game comments, save ids formatted as id:(number) should be clickable and have the person taken to the id they clicked!
This is something I've always wanted to code but never bothered to. When/if I do it it will probably work for id:477820 and ~960847 formats. It would probably take a small rewrite of Labels to support it which is something I don't want to do ...
This is something I've pondered about, but I've been reluctant because it might make spam worse. It's also not a trivial change to make either, there's no safe way of using rich content (e.g links) just yet.