I would love to have a feature added to the time based restrictions for segments and turns. If changes need to be made temporarily, it would be great to get a PM or email reminder, sent by waze to remind you to revert small changes back to the normal situation. Let's say you need to add some restrictions due to small roadworks, markets, events, whatever... where the end date isn't set in stone. This way you don't forget to check up on it later at the expected end date of the restrictions, and you can remove or prolong the restriction accordingly.
Not only useful for restrictions, but probably for a ton of other reason why an editor would want to be reminded to check up on a specific segment.

Also, start and end dates with the added option of specifying a time, instead of just the day of the restrictions.