I just
I didn't like the epilogue.
There, I said it.
I felt it almost completely invalidated everything he worked towards, everything he fought against and hated so much. The twist came out of absolutely nowhere and made no sense within the frame of the game itself. Sure, the DLC will address this and explain HOW he came to that point, but...well, I felt it left itself off on a better note BEFORE the credit-roll. It held so much more weight to it, and you really FELT for him then.
It just seemed an almost throwaway twist. I'll still likely play the DLC and everything, but it won't remove that bad taste in my mouth.