User blog comment:NaiflidG/Discussion on Cain (possible spoilers)/@comment-11331875-20140123231604/@comment-1509826-20140123232449

I liked him, I liked the pararalels they made between him and Dean. He had a great onscreen performance, was very well acted and left us guessing right up till the end what side he was. And yeah he was totally badass. Plus I sort of liked them rewriting the story, they turned Cain from arguably one of the most evil men ever, into a tragic figure who simply loved his little brother and would do anything for him. And family is the biggest theme in this show.

He'll be back, I want to hear more about this mark of Cain. Though I admit they missed a few oppertuinities, as you rightly said the hierarchy, mentioning a few big named demons as knights slaughtered and we never saw his eyes. Still nothings perfect, perhaps there saving a few of them for his next apperance.

Still I don't want Abaddon to die yet, I'm kind of hoping this season will be what Season six should have been, well split over two seasons, allowing all the good ideas to be seen to.