Decent ending to the series and as much as I saw the twist coming, I didn't mind where it went. I honestly expected something on much darker like Jarek shooting Gibbons in the head or some such anyway.
Overall though, the series was a fairly big downgrade from Terriers. It's still better than a lot of cop shows, but Ryan was right when he said he shouldn't have been wishy-washy with the continuity. Instead of being a simplified version of The Wire, it probably might have even reached that ambition.
If nothing else, they could have got rid of that shitty environmentalist episode and the equally bad Chinatown episode.
I hope Ryan continues to get shows made at his new gig with Sony though.