I just finished watching this on DVD. Wow, it was a very good wrap up. I liked it better than Vengeance. War of the Damned just felt more cohesive and I was more accepting of the new Spartacus and Naevia.
With Naevia I actually wound up liking the new actress more. I thought she was pretty bad ass throughout this season. I didn't care for her death though. I thought her death was a little weak. It should've been more spectacular. I also thought that Gannicus's take down should've been better as well.
Overall though, I thought Crassus was a very good villain, more capable than Glaber. And Crassus wasn't all bad, he wasn't a caricature. Tiberius turned into quite the loathsome figure. Kore was very tragic and well played.
The guy playing Caesar reminded me of a love child between Brad Pitt and Chris Hemsworth. It took me a moment to buy him as Caesar, but ultimately I thought this take worked for this show.
The cast was good for the most part, the battles were epic, there's very little bad I have to say about it. I still like Andy Whitfield more, but Liam McIntyre gives great speeches and I liked a lot of his dialogue particularly in the series finale.
One of my quibbles was that I felt that it was becoming too much of the Gannicus show, that he was damn near untouchable, but that was tempered by the end. I was wondering for a moment though if Gannicus wasn't going to survive.