Well, I really enjoy the mystery. I also really enjoy building beliefs that I know are wrong for characters and the invasion gave us something wierd to consider. It really helped me flesh out a worldview for one of my characters, which challanged his fundemental assumptions about the world.
Though I think that if you don't enjoy the theology/priest game you might not have gotten to be part of the "what the hell?" "X, no, Y, no the incarnated goddess!" sort of discussions. Really, if I didn't have a dutchy to run I would be sorely pressed (now that it looks like the Tonkotsu cult has folded) to make a blight cult focusing on the Undead. The problem is that players really don't often want to set their characters up to be proven terribly, horribly wrong.
Still, any excuse to chain a zombie Orge in your cellar is a win in my books.
