I'm using you, classmates

I read The Haunting of Hill House a while ago, and now that everybody at least has to be trying to read it, I won't feel like I'm giving anything away here.

I loved the book far more than any of the short stories interested me. So I'm using that as a starting point for picking a paper topic. However, beyond that I'm a little stuck and I need your help. I've had a few thoughts on topics but none of them are standing out beyond the rest. So the favor I ask is that if you happen to read this post, please comment on my ideas and help me decide what to pursue further. I hope the documents Andy sent will help me too.

-Something along the lines of how the the book is different from the movies. For instance, why did they make the changes they did? (Such as Dr. Montague's name). I do know that Andy does not want a compare and contrast paper, so this is probably my weakest idea.
-The interesting architecture of the house got my attention. Why was it built that way? What impact does it have on the strange activity? Does it have any significance at all?
-And then there's the psychological aspect as far as Eleanor is concerned. *SPOILER ALERT* At the end, Jackson never explains exactly what is going on with the house, they just decide Eleanor needs to leave because she can't handle it. The house had been targeting her the entire time. So did her earlier life drive her crazy? Did the house know she had a weakened mind? There's more to this idea, I just can't put it in words at the moment. I think this is my strongest idea.

I would greatly appreciate all comments and thoughts and will be happy to return the favor when everyone's paper topics start bubbling into their minds. I admit, I'm ahead of the game.

Thanks all!