Feature request: question filter navigation displays on Category and Tag filter pages

Hi,

I noticed that Active | Newest | Voted | Answers | Unanswered | Unsolved sub-menu only displays on the parent, /questions page.

It would be extremely valuable for users to have the ability to use these filters more narrowly, not only by all questions, but all questions asked with a particular tag.

In other words, on this site, anspress.oi, I would love to filter questions asked in the Anspress category + the Unsolved filter, + the features tag.

Let me know if you need more context.