I would really like to see a way to limit search results to the type of armor (light, med, heavy). Honestly the type is probably more useful than searching by slot but I would thing both would be useful. A more general checkbox to limit results to items usable by the current character would be fine.
While your at it. Since you added the wardrobe… What about a checkbox to select only items with skins that are not known to help with finding skins that you still need. Or an option to otherwise indicate if you need the skin without having to scroll over each one.