I'm currently babbling a lot in my DW about Black Sails, having just mainlined it, and I'm glad I didn't watch it when it first aired, because I suspect I'd have bounced off the first few eps and never gone back.

For motivation (in addition to the recaps here), I just listened to this podcast episode, in which Gavia Baker-Whitelaw does a very job of selling the show in a minimally-spoilery way and describing how the show evolves and changes after S1, and what it's got going for it.