"The elves have gone too far!" was probably my favorite line. Dan Stevens is great in it.
I suspect a lot was left on the editing floor. For instance, I bet Natasia Demetriou (Nina, one of the dance choreographers or something) had more lines.
At first I thought it would turn out Stevens was put up to breaking the duo up by the Icelandic villain, but I don't think that actually makes sense in the end — and it's funnier that he was just honestly into Icelandic folklore on his own.