I think the Halloween idea would cater to us the fans, the Halloween fans, and A&D can allways find a way to appeal to the GP.
A way they can somewhat bring in crowds is from the movie Trick R' Treat. While it's not a widely-known movie, movies allways seem to bring a crowd. And fortunately, the movie-house would still stay within the boundries.
Here's my idea for a house based off the movie Trick R' Treat:
You enter in Emma's yard with all of the ghost scarecrows. You can see the facade of the house, it is an unpractical set. You come upon Emma's severed body with the pumpkin lollipop. Then Sam jumps out at you with a sheet. You enter through a gate in the fence and are now in the yard of Mr. Kreeg. His yard is full of jack o' lanterns. You enter under the porch and into the den. You see Sam run across the hallway upstairs. Once you exit the den and enter into a hallway leading to the bedroom you see Mr. Kreeg struggling for his life after being attacked by Sam. Still going down the long hallway you hear a shotgun blast coming from a room to the left of you. Then you enter the bedroom with the flaming jack o' lantern and red writing all over the walls. You exit the house and now are in the backyard of Principal Wilkins digging the grave for the kid he poisoned, Charlie. You walk through a tall wooden fence surrounding the yard and are now in what seems like a rock quarry filled with thick fog. There is very little light and you here the voices of children taunt you. Shortly after, the flickering of the bus headlights reveal the children in their costumes, inches away from your face. After you escape from the children you are on the path lit by jack o' lanterns in the forest. After you are distracted by Laurie in her Red Riding Hood costume, a vampire tries to attack you, which later turns out to be Principal Wilkins. Afterwards, you come upon the suprise party. All of the girls are ripping out of their storybook costumes and transforming into werewolves. You see their dates, dead. Once you are about to leave the party, mauled and scratched body of Principal Wilkins falls from a tree with his his vampire costume. You leave the forest and are in an area filled with thick, dense fog. The only thing in sight is a jack o' lantern. You see the flame go out, everything is dark. Then an extremley loud scretch is heard, a blinding light is flashed several times revealing Sam's face in jack o' lantern form.
I also think that bringing back Cats N' Combs would be a way to us happy (even though it could be considered a repeat, it was a fan house. Mabye we could go back when the Black Death was actually happening, mabye we could go into the infected towns were the plauge has struck?
As long as A&D make a Halloween-based year sooner-or-later, I'll be a happy camper.