- Mentioning the monogram of a thread (like `Z1336`) should link it (like `T123`, etc).
- We should either make this more discoverable in the UI, or provide some alternate syntax (like `%general_chat`) which we make more discoverable in the UI.
- My guess is that an alternate syntax probably isn't worth the trouble and it will be rare to casually mention a room. I anticipate references to specific messages being much more common. This implies sticking `Z123` in the UI somewhere.
- Some future typeahead/search-based remarkup assistance "embed an object..." mode might further lower the difficulty of finding a thread/room.