Don't get me wrong, I like the idea but it just means more work for the current moderators and they are already complaining that it takes too much time (not saying it's not justified). Taking in mind the "company culture" I think many good solutions will end up in the pile of unresolved issues because no one took the time to close or rate the topic correctly.
What people could do is + the topic with the correct answer. This way, when searching, those topics might appear ar the top, rather than on page x.
Something else that to me is important too. People making suggestions do this based on their own past experience or knowledge. These experiences and the knowledge can sometimes give you clues as where to look, helping you to resolve the issue you have. Therefore giving value to topics you would exclude from your search.
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