Just finished watching it. I agree with everything you said, especially about the last few minutes of the show. DDK walking out with Harrison, the boat coming along, etc had me rolling my eyes, but his speech while DDK was on his table and reaction to seeing Deb was fantastic.
My prediction for season 7: Because of Deb being head over heels madly in love with Dexter, she will take 1-3 episodes to come to terms that Dexter is a serial killer, but he'll confess to her that it's only murderers and bad people, etc., and not only will she cover up for Dexter with her power in Miami Metro, she will help him out with at least one killing.
Not the best season ever but still great. As for the spoiler stuff, I avoided this thread until last night (finally am caught up) so if I hadn't seen the series finale, wtf would you be in this thread.
Shameless I've heard is good, will give it a shot now that Dexter is over. Boardwalk Empire, that show seems boring to me. I will start season 2 shortly but the first season was just "ok" to me. But a lot of people like that show, go figure...
I thought I read this season was the last one for Dexter, but can't be the case with that ending.