Do we need a check for concentrations of similar edits?

[skmoore]

In the January data a colleague noticed a large spike in water point features around the coast of Greenland. She checked OSM but didn't see anything new added in that area. I looked into it further and found that someone had performed an unauthorized import at some point before the release, which was then reverted after the January release:

orange=new in January, white=existing

https://www.openstreetmap.org/changeset/177975060#map=4/75.34/-47.29

Is this something we should check for? It could help identify instances where bad/unauthorized edits were made that aren't necessarily vandalism. While the presence of the data in the January release isn't concerning on it's own, the fact that those points will disappear from our basemap in the next update makes for a confusing user experience, especially since it's not very apparent what happened if you just go look at OSM.

This is admittedly an edge case. For the most part we'd essentially be checking for unauthorized imports in OSM that were either not caught by OSM or were not caught in time before an Overture release. In this case it looks like there was a few weeks lag between the import and it being reverted.