Interesting argument you guys are having. I HATE horror flicks. Don't watch them and have no desire to. Yet I love HHN. I love Halloween in general. So for me, I could care less what the IP is and only care how good the house is. Like others I don't scare easy in a house, I am looking at the scenes, effects, costumes, etc. That part fascinates me and I love to decorate our house for Halloween. Spooky music, fog, lights, etc. So of course seeing the pros do this is fun for me.
I imagine that there is a good % of people that go to HHN that have never seen the IP of the house they are going into, it only matters how the house turns out, not the IP selected. The IPs are selected to get people that are fans of those IP to go to HHN that have never been to HHN or were not planning to go that year. That is all the IPs are for, the IP itself (how good or bad it is) doesn't actually correlate with the quality of the house. My husband LOVES walking dead (as do many others), he hated the house. the best part of the whole house was when we walked out there was a horde of zombies "blocking" our way. So we had to go thru them, it was cool. Last year he liked the house a little more than the first year, but he liked other houses that he never even saw the IP tied to it prior to HHN.