Good idea but don't stop there Jabba... Traffic from each of the products Oz and Av, plus ADSB plus Mode C from the web. That would catch most of the traffic but not all. Primary paints from radar would be good also. But.... It all relies on 3/4G unless you are using an ADSB receiver.
If only we had a simple system like a fully functioning government subsidized GPS position based system with a cost effective display system that can be easily and cheaply fitted to all aircraft. Let's call it ADSB !