I'm seeing more news articles talking about this. Currently it only lets you report two different types of reports, one being speed traps but only while in "navigation mode."
Hopefully in the coming months they roll it out to more locations and allow for reporting while not in "navigation mode." I typically don't use "navigation mode" since I already know where I'm going.
I've been promoting the hell out of Waze in my area but if this takes off I'll move back to maps.