Do you want to be the ghost ship materialising out of the fog with a load of gruesome, rotting zombies on board? What a stupid question. Yes, obviously.
That's what's coming in Curse of the Vampire Coast, a new mini-expansion for Total War: Warhammer 2. It's due 8th November, not quite in time for Halloween, and costs 14 (it's discounted to 12.59 currently).
The win condition for the new campaign, and for the four new Legendary Lords, is to grow infamy and become the most dreaded pirate captain on the sea. You do this by winning battles and establishing Pirate Coves, a new thing. They let you - instead of taking, sacking or razing ports - build a sneaky sub-settlement nearby, which siphons off income plus any other benefits you've unlocked upgrading your Cove.