I really love their body language (literal!) and their facial expressions. Being anatomically correct is just an, erm, perk! I like your attention to details, too, like the difference in body hair and the different floor materials they stand on.
Their Hogwarts professor robes are really accurate looking, and the drag clothes made me sporffle! There's gotta be a story in there somewhere, maybe along the lines of "How I *Really* Could Afford to Buy You That Cauldron/Book You Wanted For Christmas" XD