The latest pre-release has added the ability to add your own custom labels to Movies and TV Shows. This gives you the ability to tag content with your own labels which then gives you the power to query with them.
For example, add the
maddox label to a bunch of Movies, then use the simple query
labels=maddox for a Virtual Channel, and voila, a channel full of movies just for @maddox.
With Labels, you should be able to create all kinds of strategies for your Library.