Via the Waze app, I can now report traffic-jams, crashes, police patrol, etc. Adding a new category "suggestion for a change in traffic organization" adressed to local municipality might be a benefit. I could suggest changes as "there should be a full line in the middle of this section to avoid collisions" or "that street should be one way" or "build a round-about in here" or "U turns should be allowed here". The suggestions could be routed (e-mail, API, third party websites) to the local representatives. Suggestions might be rated. The best rated would stay displayed. Waze app is probably not a place to discuss them (leave that to the experts).