User blog comment:Kajune/SPN's redeemed antagonists/@comment-26271908-20160601191551/@comment-1975828-20160602205214

Actually, from what I heard, Castiel was written as Lucifer's vessel BECAUSE he had no plot. Once he recovered from Rowena's spell, he had no role, so they made Misha play Lucifer. But I wholly agree with much of what you said, his role as an antagonist was pretty forced.

Now that I think about it, Bela is a really good example of a bad turned good. The ones I listed on this blog didn't really do much to redeem themselves, or didn't show regret in their bad acts. Meg never apologized, Lucifer just kept killing, and Metatron only cared about God.

I agree. A lot of changes could have made the series better. A lot.