I noticed the admin boundary, but I was under the impression that these features should only be edited with special resources, especially because they are not visible in imagery. I think that if I was in the habit of editing admin boundaries using only Bing and Mapbox, other OSM users would rightly point out that these edits are essentially guesses.

Hi imagico, I figured that even without imagery I could make some improvements to the shoreline if there are sharp angles that are unreasonable for a shoreline. However you bring up a good point and I will avoid editing when no resources are available. Thank you.