Confirm Merge when selecting "merge selected" from the duplicate screen

In the Duplicate Constituents screen, if you select "Show More Details" in the individual profile, select the profile you want to keep, and click "Merge Selected", you get a confirmation window that says "Confirm Merge". This should also be a safety feature when you "select all on page". It is too easy to click "Merge Selected" instead of "Not Duplicates". Since there is no undo merge feature, this would at least give you a second to pause and realize you clicked the wrong button.