Currently, there’s a Start with what Surname option (for Names section) that shortens the output results and commences with a particular Surname (for more focused review), but that still includes potentially unwanted/unneeded Surnames that follow alphabetically.
If that feature instead had two checkboxes, one for Starting with and one for Only (and Starting with defaulted to checkmarked)… user could narrow checking to Only single Surname for when there are already many potential duplicates to wade though or when the intent is to find and correct specifically-identified potential duplicates. (this came to mind regarding recent post w/user tburkhart dealing with dupes in FamilySearch FamilyTree matching). Thanks