The fact that I can't marry Serana. Now what's yours? And if you agree with mine let it be known!!!
I agree completely, they make her the most likeable character and to me she feels like the most living character in the WHOLE game and then they do not let you marry her, and not to mention that some of the dialogue even hints at the fact that you and her develop feelings for each other. It just really disappointed me, but i still love her as an awesome character. Also she is by far the best follower, she is smart, and adapts to the enemies.