Suggestion:
"Place Closure" Feature.
Please provide an option for editors to mark any place as closed, preferably with permanent closure or temporary closure options. Based on these two choices, branching options should be displayed.
For example, if a place is marked as permanently closed, the reason should be displayed along with an option to delete the place from the map.
If it is temporarily closed, options for duration and reason should be shown.

Additionally:
Display a warning to drivers before starting the journey, along with a red icon indicating that the place is closed.

Many people I have spoken to have consistently mentioned that Waze lacks this feature.