I've not seen any Justified stories posted to the misc categories either. If an author posts a story without a category, that's where they go. I then go through those misc categories and create one for the story and where it belongs and move it. Alternately, authors will post a category req here in forum, email me, and sometimes even find me in IM.
In any case, I've never gotten a request to create a category for Justified, nor have I seen any stories for it here.