Come on, the writing is on the wall here.
How many times have we seen people say that Imu will be dragged off the throne and that Teach/Davy Jones is the true ruler of the world? Do you really think Teach will fail where his father failed?
In these types of stories, they're always written so where two people from the past failed, their descendants will finish the job for them.
That's true for Luffy, and it'll be true for Teach. They're the characters who were specifically shown to be a parallel to Roger/Joyboy/Nika and Xebec/Davy Jones for a reason.