An overlay mode would be beneficial to drivers, passengers and Waze itself. It'll allow Waze to collect traffic information in the background, allow drivers to leave their phones any where in the car and make reports quickly. Allow passengers to use their phones normally and make reports quickly.

It should be easy to make reports, and should have a translucent pop-up when there are reports/speed cameras/red light cameras enroute.

I know if Waze had this option I'd leave Waze on as a passenger and those times I can't be bother mounting my phone or leave the screen on.

Bluetooth automatic turn on and off would be great as well.