The only real thing that I and many others are upset about is the fact that you can't marry Serana. Serana has to be the most genuine NPC in the entirety of the game and the player builds a strong relationship with her through the course of the DLC. I myself was not upset, but surprised by the inability to marry her. It almost seems as if Bethesda set her up to be the perfect marriageable NPC and then denies you the right.

Bethesda: UMAD, Fans?
No seriously, they are teasing us with her.

You would know why if you knew how she got Vampiriusm From Monag Bal..

Well , there are over 492314345 threads on this subject.

Here's the link to the petition

www change . org/petitions/bethesda-softworks-allow-serana-to-be-married

It was hidden inside the cake, wasn't it?