There are many questions with many tags that I never heard even the name of before. So, trying to find questions where I hopefully could do some help, I clicked "Unanswered Questions", but what I see are questions which do have answers, and only the OP was too lazy or the answers were too bad to be accepted.
I'd like to see a feature that separates truly "Unanswered Questions" form "Questions without accepted answers". I wouldn't mind if the later (as actually implemented) would be completely dropped in favor of the first.