Been Catching Up On My Gravity Falls AUs

And I gotta say, there are a great plenty target rich environments, but the one I think catches my eye is this Pirate AU. I wonder if I could try to come up with something the same, yet different from Assassin's Creed IV: Black Flag with it... maybe use the Society of The Blind Eye instead of the Templars, but I might have to edit out the Assassin's altogther, and maybe just have it be Dipper, Mabel, and several OCs instead of Blackbeard and co against the Society of the Blind Eye. What do you guys think? And what would Dipper call his ship? Oh, and here's the cover art.