Meanwhile, I was one of those who had the kid pegged from the first episode. Whether it was because the character just behaved creepy, or because the actor playing him did an awful job acting, I didn't like the kid from the start.

An Anglican priest in a small town in England makes sense as a central figure the town might look toward. An Episcopalian (?) priest in a small U.S. west coast town not at all. The character just does not translate between cultures.

The technical name for an angel who has renounced heaven is devil.
And it is not all that much of a surprise that NBC would glamorize devils.