I have redesigned how I filter the items in my site's database. There are currently 4 useful filters on items, including:
2. Not Available
3. Hard Mode
4. Normal Mode
You can combine these filters. For example, you could look at only hard mode items that are available. You'd see a lot of TOC exclusive items since ICC hardmodes aren't out yet. It should be noted if you uncheck all difficulties it will reset to the default, and the same goes with available and not available. Since the site does not parse the items themselves (the names/etc are entered by hand) this prevents filters regarding to item stats. If I pursue that further there may be bigger things in store.
You can of course access these filters on the top of all item listing pages and the main index.