On each SE there's an "Unanswered" tab which shows all questions that don't have a positively voted answer. Even if you answer your own question (and it gets an upvote), the question doesn't appear in that tab any more. Now I can see how that makes sense on any other SE, because there an answer is an answer. But I'd say on PPCG 99% of time, a self-answer will be a reference implementation and not an actual competitive submission. Case in point: my own recent popularity contest.
So, while I usually don't have any hopes that we'll get any custom modifications to our SE instance, would it a) make sense and b) be possible to exclude answers by the OP from the query that selects questions for the Unanswered tab on PPCG?
(As a side note, the same might make sense for the Revival badge.)