I like the IPs because I can get the back story before I walk through. I go with a group of folks and we have several viewing nights to get ready for HNN. I wasn't comparing houses, just the IPs themselves and the excitement around them.Why are we comparing IP's that haven't been experienced to past years?
The IP's ultimately are irrelevant if the house is executed greatly.
But you are right, knowing and loving an IP could lead to a bigger let down. I really liked the CitW movie and couldnt wait for the mermaid, but was kinda let down by it. Still was a great house, but the mermaid was just funny.