I'd put the 'search parameters' bar somewhere less intrusive rather than in prime visual real estate on the screen.
It's partly the idea, that it's highly visible like a notice -that the feature is available to members. In the near future I can modify it so that once you are using the filter it places that information at the bottom of the screen. It's still an improvement over the old APUG. The actual search results on the old APUG started about 400 pixels down, and the new system is about 280px down from page top.