I've never had any reverence for previous versions of Sleepy Hollow - never even liked the original story, which is so cruel to Crane. So am content to see the writers mess with it.
Love the fish out of water aspects,too. The actor that plays IC - I should probably learn his name! - pitched it just right. It makes sense a British soldier already in a strange land would be good at adapting. He was dipping into Abby's vocabulary by the end, already learning.