I just finished the season...
it was excellent. I actually think it was stronger than season one. the narrative was tighter, less all over the place. and words cannot describe the majesty that is Helen McCrory. her performance was stunning. she really upped the ante.
[spoiler]I am very sorry to see her go.[/spoiler]
my only slight reservation was Vannessa was a bit victimized (not that Green didn't knock it out of the park) and her story sort of overshadowed some of the others. Dorian and Victor felt a bit slighted. but otherwise it was fantastic.