It would be awesome to have a quick status option that shows at the top of your home timeline. The quick status would be replaceable, meaning that when you update it, the status removes the old entry and replaces it with the new status. Uses may include automatically posting your currently playing music track.
Benefits include not taking up a lot of DB space for very similar posts that may happen frequently and are only relevant for a few minutes. For an example, a script that automatically posts your current music track would grow the database exponentially, fill up other timelines with lots of very similar posts, and increase thee size of follower's DB as well. With this feature, no matter how much or often it gets updated, it would not grow the database by a lot, and it would not fill up follower's timelines.
Can be easily implemented and federated, I like this idea and have thought about similar things before :)
I think I remember this idea coming up in IRC. When I read it I was imagining something more like what Dreamwidth (Livejournal) has where at the bottom of the post there's a section with music and location.
This could be auto-filled grabbing info from a Libre.fm or ListenBrainz server, configured in settings defaulting to the main Libre.fm server, and then posted manually either standalone or at the end of a message maybe with a
(That was supposed to be on new lines)