Regions should be able to be configured as alerting referees/streamers when players enter (or exit?). A simple message such as has entered would be sufficient. This could be useful for alerting referees about areas that can be prone to cheating, or letting streamers know that a player is entering an area that is high intensity and worth watching (Direct Fire's Pain Water, Rite of Passage's Assassain Lane, etc)

These regions should be separate from the functional regions used for tracking player boundaries, and perhaps should be checked less often (a timer might be sufficient, once every 2 or 3 seconds), for the sake of efficiency.

I can see the potential of spam think bed set outside wool room pain loop but also important at the same time to increase coverage of the action as it's happening.