The more I think about it, the more I have to include an all-out assault on the LDS Genealogical Record Vault that's well-nigh impervious to gentiles without a court order. That way I set most of the film in some sort of underground tunnel system -- it's a good match with the existing body of made-for-Sci-Fi-Channel "original" films.

Polygamy is a nice addition as well, as is cannibalism, and blood atonement.

... Reed