They definitely should!
I wasn't expecting scenes in 6x10, there were lots of spoilers for the episode but the writers never mentioned Beremy, so the parallel in front of the Christmas tree was a pleasant surprise (love the title, btw
)!
I didn't have high expectations for 4x09 either...at the time I used to think April was going to be Jeremy's new love interest and Beremy was over for good...I have never been so happy to be wrong!
Guess we are lucky when it comes to Christmas episodes!
