Finally got around to watching the finale and LOVED it. Overall, a GREAT season of television! Not to try to de-mystify the ending of Colin Hanks getting off scott-free from murdering Malvo in cold blood, since I'm fine with just looking at it as a non-reality based morality tale, but I think the Bemidji police could have EASILY "fixed" things to make it appear as a self-defense killing.
I REALLY hope another season is coming as long as the quality can keep up. Billy Bob will be missed, but there's plenty of great actors out there who could captivate us with a new characters. The majority of the Dexter seasons had unique villainous characters played superbly by great actors.