I will add that the contrast between the sacifice of humans to the Mayan gods stands in stark contrast to the sacrife of Jesus, the Son of God.
I think Mel is building a case for Jesus. A really good case.
I think you hit the nail on the head;it will be another film for those who have eyes to see. The movie may in many cases,open up those eyes that hitherto had been open but not really seeing. Why it may even open some that been shut entirely.