As a feature, show how close/far someone is to getting a badge that has more than one part. I.e. for convention, show how many posts the user has with a score above 2 in meta (if its less than 10), or for Copy Editor, how many edits they have made.
Does not seem like a big deal to add, but it would also answer question like "does this count as an edit?" really easily for the user (they could just do it and find out).