I'm going to see episode 1 of Season 4 soon and I can't wait. This show though not historically accurate or correct in many aspects is still more along the historical vein of true Pirates than anything POTC ever did (which is fine, I still love POTC for the most part). Blood, guts, sex, intrigue, anger (so much anger).
I don't mind the cussing and sex but I do appreciate that as the seasons have gone on, they have taken almost all the sex out. Drawing in the audience with T&A and then slowly letting plot and characters take center stage that's pretty clever.
I will say that the advertising for this show must be a bit off. There's very few people I've met in my every day life that have ever heard of this show. I've even interacted with some other Pyrates that had never heard of it.
I'm very sad S4 will be the last but I'm also very glad that they know when to call it quits and leave us wanting more. I love the fact that this is a prequel to Treasure Island and it adds so much to that classic story that I know we've all read and watched to death.
Another funny note, I know one other person that watches this and he's not into Pirates. I made an off hand remark about "atleast this character will live" and he was shocked that I ruined it for him. I had to point out that the character was in Treasure Island and apologized for ruining the plot to a 130 year old book, haha.