Could you make it so that when you add a new cast member entry, it get inserted before the current selected row on the righthand list instead of at the end of the list?

Edit: Never mind, I forgot about the drag-and-drop for names.

Edit2: Actually, I'm going to amend this again and say that this should still be there.  It's a more discoverable way of doing the same thing, especially since "discoverable" for the drag-and-drop means learning about it on the forums; it's not described in the help that I can find.