My Thoughts on the Finale (spoilers)
While I'm still pissed at Syfy for canceling it in the first place, having an actual ending is better than not. Most shows don't get to do this, so for that I am thankful. Of course it could have been better, but on the flip side, it could have been way way worse. So I'm good with how it went down.
I've seen what others have said about having Dave and Duke in the barn as the "love". I agree that this would have been much better and allowed Audrey to go back as Audrey.
I think that in time Paige will remember being Audrey, just like when she was Lexi or when she was Mara. Maybe something happens with James where he needs a bone marrow donation and 'poof' Nathan happens to be a match. Now Paige is curious and orders a dna test, and 'poof' again! Nathan is James's father! And this floods all the Audrey/Lucy/Sara memories back into her.
I know that sounds dumb, but whatever, I think she remembers being Audrey at some point.
I am surprised that Dave didn't make an appearance in the finale, that was unfortunate.
Why was Duke a ghost that only Dwight could see? And why did he speak to Dwight telepathically? And for that matter, what was the point of Duke's death? How would it have ended differently had Duke lived and Croatoan taken all the troubles?
Croatoan made a choice to turn from bad to good for his daughter. It wouldn't have mattered if he had all the troubles or none of them. It was his choice, and the only way any of it ended. Nathan and Audrey couldn't keep him in the barn any other way. So really, Duke's death served no purpose. The only purpose I can think of, is that he got to be a ghost and show Dwight how to keep his daughter alive, which was odd in itself because Duke and Dwight weren't even close.
In the end, we got a happy ending, so...yay! Better than we got for Dominion! #FUsyfy