Changes that would have made the movie better (major spoilers)
1. When the house was being attacked, after losing half of their men, why not burn it down? It's obvious that it was a huge fortress that was hard to break through. If they had burned it down but others got away and now the hunt was on, it would have made for a better movie.
2. Why have the main villain(father played by Michael Eklund) killed of so soon. It would have been better if there was a standoff between him and Ashley Bell and her picking a rifle up and pointing at him and him responding "you might have enough bullets there for me, but not for many more that will come", to which she responds "you're not worth the bullets" and steps on some trap that was created by his gang which impales him and she walks away.
3. The end showing more cannibals come and be on her trail. Indicating a sequel.