SCARY but could have been better

Rating: 7/10 (4 April 2013)

I really wish I could rate this higher because when I first saw the film there were parts which really freaked me out. However, I think it could have been made much better. The following has tons of spoilers.
1. I found the notion of some sick adult who wishes to appease an old deity much scarier than the children doing it themselves. How did they manage to do some heavy work which was required to set the executions up anyway?
2. The way the father reacts seemed unrealistic. He was way too collected and I wished the director delved deeper into his psyche going haywire with the events. The rest of the family somehow never heard or saw anything weird in the meantime.
3. I was under the impression that the families had been living in the house for some time before they were killed but somehow the family we see die the night they arrive at their new house.
4. None of the previous families reported anything spooky or acted strange when it seems that if the pattern was identical to what happened to the one we saw (which is what the film suggests) then somebody would have noticed something for sure. THEN the father never showed anything to the police so as to conveniently keep the murders a mystery.
It may seem that I have quite a strong opinion against this film but the truth is that while viewing it I was too busy feeling horrified to fully make these realizations. Hence 7/10. It was scary but unfortunately there were things at the back of my mind which didn't really click together. Also, my mind didn't feel devastated afterward as I rather quickly overcame the fear as I continued to see flaws in logic.