I'd like to propose a setting for chatrooms that prevents link-only messages from being transformed to oneboxes.
Oneboxes have a purpose, and generally speaking they're - sort of - nice to have in chatrooms. Some chatrooms however do not "allow" oneboxes, as they clutter up the transcript. Personally I do not mind oneboxes in "fun" chatrooms (where having fun is literally all that counts), but they can be very obnoxious in rooms where discussions take place.
Problems that I see with oneboxes:
- potentially content that I don't want to see, from links I wouldn't open (i.e. images)
- disruptive when it comes to conversations
- oneboxes can be obnoxiously big depending on the source