It would be great to be able to filter a forum to hide solved topics. This would be especially helpful for the unlock/update request forums, so country managers could hide all of the solved topics and quickly find unsolved topics that may have fallen through the cracks. I don’t see a way to do this currently.
An example of this being implemented with PhpBB:
http://www.latex-community.org/forum/viewtopic.php?f=5&t=17713