I want to suggest a feature that I would really love to see implemented.
Whenever you answer someone's question and get your answer accepted I would like to see new answers pop up in the notification area. Why would I want that - as it usually happens, the accepted answer (if there is one) gets viewed much more than other answers below but other solutions may be more useful/suitable for different situations, so if I could monitor this, I would at least edit my answer to refer readers to the answer below so they could notice it too.
In any case, this could be a checkbox in settings that some of us may use. I don't think it would be hard to implement and won't make a big difference in performance!