Heard from a few people that we are getting hints of a Pirate's Life continuation, if thats the case, it could explain that Jack meant what he said that he will return after completing a "promise" he made to a mysterious woman, possibly return the treasure he has.
If the story continues, I got a few ideas on what the next tall tale should have.
- The return of Hector Barbossa (since we see and hear him during the third chapter).
- A Maelstrom Ship battle like in the third film.
- A Davy Jones boss fight if he escapes his imprisonment from the Ferryman.
- The reveal of the mysterious "Cap'n" who leads the Dark Brethren.