Agreed, but since Google owns Waze, and the Tesla nav screen is Google, there's some reason to hope that we'll get some integration. Unfortunately, since the routing is done on Navigon, all we'll get is better reports, but not better routes.That's silly. Nothing currently beats Waze in inhabited area's.
(Side bar: I wonder if Google Maps will ever implement the speed-trap/traffic-cam warnings in Waze? Of course they could, but has Google gone too mainstream to piss off the law enforcement community?)