That's pretty much why, even though there's so much hate for the series (and I'm not particularly interested, I check out the traps and story via Wikipedia), I have always been for the idea of a Saw house: it's inherently perfect for the concept of HHN and it will draw in (more) crowds.
And Jake, I was really scared of Chucky when I was in 6th grade, so I WILL be scared. It's all worth it to see Kevin in Saw though...
Oh, and there's
always been a Saw house where you're caught in a trap, it's just that they call it Shrek 4D