The ability to filter what is displayed on the road layer would be a welcome addition. For example, provide a filter for displaying segments marked as toll road, any elevation other than ground, segments with no city specified, lock rank, etc.

In my own case, I have the app setting to avoid toll roads enabled, and my navigation suddenly starting routing me out of the way for a few days. It took me a few hours to discover one small segment that someone had mistakenly marked as a toll road. If there were the ability to show only toll segments as part of filtered road layer, this would have taken seconds to find.