Currently, if you access a deleted question you will get a short message informing you that the question has been deleted. However, if you click on a direct link to a deleted answer or comment (which you can get via notifications), nothing is displayed.
This is naturally quite confusing as you will get the message about a new answer or comment via notifications, click on the link and simply see nothing.
Therefore, I propose to display some sort of message to the user, informing her/him that the answer or question has been deleted. Note that this is different from always showing a deleted answer/comment, as I specifically request it in case you access the specific URL.
One example for a comment would be: Can Heartbleed cause a server to crash?
One example for a deleted answer is: Can I use one model inside of a different model in CakePHP?
This question is related to CSS bug regarding deleted comments, but requests a feature to circumvent the problem altogether.