Out of all the Order Halls in Legion I feel Priest is the dullest. I don't think the Layout really makes sense. Lorewise Priests tend to be Holy and while I love Shadow Priests I think they should be in a separate room. Sure they have opposite sides of the Temple but I don't think Holy Priests would be okay with an open room of darkness in their temple. Maybe a hidden passage to an underground shadow lair would fit better. The two coexisting 100 feet from each other doesn't seem likely.