I think probably the Ghoul, she was going to give you more candy each visit which really helps boost your total, with the downside of it being rotten and inedible and also spoiling the other candy in your bag. So your strategy would change because you'd have to eat fresh candy right away before it rots. And maybe there'd be a way to counteract this "rotten" effect, perhaps from the Witch. Since it was never prototyped, I don't know how fun it would've been, but it seemed to have the most potential to change up the gameplay. :)