Don't know if I'd be annoyed if they eneded it with him finding a way to conquer his need to kill. I honestly don't know what to expect, I'd like to think they don't play it safe. Dex or Deb have to die by the end, or both.
They are hinting more and more that Dexter will end up dead, but that might be too obvious.. I just can't predict it either way at the moment. So stoked for this finale season, going to be sad to leave it behind though.