There is a feature "suspicious edits" which is used to flag edit as suspicious (used when you see something that is likely vandalism, but you aren't sure and want someone else to have a look). Huggle is collecting suspicious edits to postgre database (but can store it anywhere else actually, for each suspicious edit a web API hosted on wikimedia cloud is called).
We aren't currently doing nothing with these collected data. It would be nice if we created some web interface that would display list of (recent) suspicious edits, that probably need an expert review.
Each edit that isn't a top revision anymore should probably be automatically removed from there.