I just learned today that there will be a free expansion for Pirates of the Burning Sea. You can check out more details here if you would like. When PotBS was first released, I thought it was not very good at all.
But then a few months ago GoGamer has a sale and I picked up PotBS for less than five bucks. Heck, the shipping cost more than the game. So I tried it again, and this time I liked it, really liked it. The avatar combat is soooooo much better than it was, and the ship to ship combat is great.
I have been looking for a single player pirate game that has combat like PotBS, and have yet to find one. The only reason why I did not stay past the free thirty days was because at the time I was thinking that I would be only playing Aion, and I didn't think that I would be into Age of Conan as much as I am.
I believe God created game time cards for gamers like me. I pay my thirty dollars and it's up to me to get my moneys worth, no guilt over not playing something I am paying for, because it has already been paid. So there may come a time when I will fire this one up again!