Sometimes I read a question and I think "this is a great question!" Then I see there's a close vote or two, but I ignore it because I think the question is a good one.... However, the reason people want to close the question is that it's a duplicate of a previous excellent question.
This doesn't happen in the close votes review queue because there I am informed that people want to close it because it's a duplicate. I wish there were a feature to provide this information outside of the queue without requiring a click.