Here's a quick mockup (not 100% finalized) of the upcoming search expansion:
In addition to using the search box on the top of the site, I've added a detailed search function that can be used to get much more specific results and also specify initial sort order. I had to change part of the searches over today in order to finish it, so until the code is done some results may be a bit erratic for now unless you're searching for very specific items.
Most searches will work just fine with the one-box search up top though.
On the right you can see all of the upcoming search sections. I'll also be adding date ranges and we have a live search suggestion function in testing for some of the smaller searches like series and characters (which is why the series is drop-down only for a few days).
Jia and Ginny spent a couple of hell-weeks porting the old costume database over so that all of the series are more standardized for the searches, and we've even built in common misspellings and Japanese translations of the series (not implemented in the current results yet), and that will improve over time when more items are added to it.
I should add that the only other thing we'll likely be updating prior to the upcoming main site change is the front page. All other new features (and there are many of them) will be launched all at once after we do a closed beta test. And square cropped thumbnails are being launched directly into the sun. As are cropped costume icons.