Character Analysis: The Necromancer

I think that a plot twist that I would make for The Necromancer, is that when Leonie Barrow signed her name on the contract she signed Cabal's name instead of her. Yes, at the time I read this. I really wanted it to happen because I thought it would be super funny to see Cabal's careful plan foiled by this little act. But, in the way that it would change the story would be very strange. Seeing as how Cabal's soul was already one given to Satan it wouldn't change much. He would simply get damnation and that would be that. But, would it really effect Cabal? Well, he's already had his soul away from him for so long, and when he died he wouldn't have it in him, so in all reality it shouldn't do anything to him. And, of course Satan would either