No Subtlety
Granted, I haven't read Macomber's books, so it might have stayed close to the plot, but I do love the Mrs. Miracle movies and watch them every Christmas. The beauty of those movies is that you don't really know if she's an angel or just really good at helping people (similar to The Good Witch series, and also the reason I love those). This wasn't a bad movie, but I missed the "Is he or isn't he?"
vibe. It's spelled out in clear detail from the first scene that he is an angel and what his mission is and the consequences if he fails. Takes some of the sweetness and magic out of it by hitting you over the head with every detail from the start.