User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/Where is everyone getting this Crystal Cave speculation from?/@comment-4062486-20121216072020

Well, since we know from the promo trailer that Merlin will lose his magic, it makes sense that he would go back to the place where magic was born. Especially since he will lose magic at a very bad time and will desperatedly need it back. This could also be the place where he meets Balinor again, or perhaps even Taliesin? I definitely would like it if he would come back here, and it makes sense that he would.

And to answer your questions, I definitely agree! As a big Mordred fan, I was really disappointed how he became just a background knight. I absolutely LOVED him in the latest episode, but I have seen too little of him and I think he should have been developed a lot more. And yes, I would have liked to see Morgana scream.. or something at least!