I'd love to have the "<DEVICE> Activites" tab log a timestamp each time a device is noticed ON/OFFLINE (for non-native devices). This tab shows information for Wattbox and other native devices, but displaying times it noticed non-native devices (ie - Crestron) have gone ON/OFFLINE it would be extremely helpful at diagnosing problems or what has happened in a problematic system.

It wouldn't be a smoking gun for a troubled system, but would give another data point to use to determine what has happened in a system or a component that is going bad.