Should one or both of these two close reasons:
- unclear what you're asking
- too broad
be removed from list of possible close reasons, after a question has an accepted answer?
I mean, if question is answered, and answer is accepted, then I think it proves that question was neither too broad, nor too unclear, and using these reasons after-the-fact is kind of pointless. If it is otherwise an ungood question, some of the other close reasons should apply.
This mostly applies to the pile of old questions in review queue. So, while this might seem like a small tweak, it would slightly reduce the mental burden of reviewing a question and deciding if it should be closed or not, and for what reason.
To clarify: for obvious reasons, existing close votes with these reasons must still be counted, accepting an answer would not make them go away.
2nd clarification: If the accepted answer is by the asker, then this suggestion probably shouldn't apply. Getting an answer and accepting it is a form of peer preview, and works as a filter. Some reputation limits on asker or answerer could be added too, to strengthen the peer review aspect of accepted answer.