Adding map features requires approval/access/high enough map editor level.

I suggest adding support for a 'personal' layer in Waze.
On that, everybody can add anything, change anything, without restrictions, but will only show for you (your account / the Waze on your phone / ...)

From the Waze perspective, that allows you to mine for information harder to get, to be potentially shown on a 'Community' layer or even the main map (after maybe some extra vetting)

For example, you can mine all the 'Personal' layers for things by looking for features that multiple people, independent of each other, add to their personal map.
For example, if multiple people add a speed camera to the same place in their 'Personal' layer, then it would make it a candidate to show it on the community layer or even globally.

Win-Win, we get the benefit of adding features that maybe only we care about, and Waze benefits from extracting features/mining for information that is hard or impossible to gather any other way.