Greg,
Currently, we show status on ADS-B (Receiving, Out of Range, Squawk), # of Nexrad image, # of Pireps, # of Metars, # of TFRs, Traffic Reports, GPS Ownship updates, and Heartbeats. We do not currently show the actual signal strength for GPS, Fis-B, or Bettery Level from the iLevil. I'll make sure this is on our Wish-List for consideration of the development team to add in the future.