Subtitle Category Request

It would be great to have a Category called "By Subtitles" or "Subtitles" that then listed all the languages you have subtitles for, and then when you select one of the languages all the movies with subtitles in that language would be displayed. This would be very nice, as when you have a large collection its hard to remember which ones have which subtitles and if you want to see all the movies that have Spanish subtitles for example this would be a very helpful new category to have.