Google Analytics Real time Tracking / Reports. What to track?

Google added more flexibility in real time reports. 

Event Report – We can track the Visitor engagemnt on particular element in the landing page (like call for action, download, Real Time Analyticsother type of engagment). Real time event tracking report is effective whenever we run new campaign to understand visitor engagment on various elements in the landing page

Device Segmentation – Desktop, Mobile, Tablet traffic are show graphically in Real Time > Content Report. This will help to understand Multidevice behavior. But I am unable to see table traffic in realtime report. Need to wait & watch.

Shortcut for Key real-time segement & Real time to overall data comparison.

All of the above, i love real time dashboard, thats where we can segment and what we want to look for in real time.