I always hated going to the review page, only to find nothing required reviewing. It is a time-consuming task going between questions and review.
I was thinking, if there were a notification, or at least a little sign, that a review is required, it would save all us reviewers going back and forth between pages. If there is no notification, you will know that nothing needs review and you will continue with what you are doing. If you see a notification, you know there is a review available and you should go to the review page.
Why is there not a notification?