Season was good, finale was alright. Said it last week but all of Veidt's story on Europa was just pure filler, and Lindelof pretty much even admits it in this episode with the reveal that the Game Warden was set up by Veidt to give him a challenge while stuck there.
As someone who holds Watchmen in high regard I also can't look past the picking and choosing of what parts of the comic to take for the story they came up with. Someone else already mentioned it but Dr Manhattan being destroyed by a human when he stated no human could ever pose a threat to his existence is a prime example, but there are more. It's a sequel that only uses what is convenient for this story's purpose, which is an ironic laziness since they actually deliver some incredible thought-out and well-constructed character episodes.
Regarding the finale, it suffers from typical 'wrap it up' plotting. Laurie's there with a connection to Jon, Looking Glass is in the midst of the 7th Cavalry in disguise, neither gets anything to do or even experience anything resembling a pay-off for their characters as they are teleported to Antartica only to listen to lazy expository dialogue from Veidt about how he's stopping Trieu. Don’t even get me started about them stuffing even more exposition in the final two minutes just to set up that lazy-ass Inception ending.
The series overall was good but like I feel about most tv-shows, if this is supposed to be amongst the best that television has to offer, folks need to check their standards.