I would very much like to see this.
Only discovered Waze a few days ago and have already fallen in love with it. I use a black box app (I'll leave the name out in-case there are rules against "plugging") in conjunction with Waze -- the black box makes note of not only speed and time, but current Latitude and Longitude. I began reviewing footage from a lengthy drive I made yesterday with the intent of noting several potholes (using exact Lat/Long) only to find that it wasn't possible.
For now, I'll just update business information/location for areas I pass through; there's quite a lot to do in regards to my area alone.