If you’re going to go back to the well with such a big reveal, it’s clearly to deliver the end all / be all final adventure of the Pirates series, while at the same time apologizing to die-hard fans for the big mistake that was made previously.
And if that’s not the approach, then it damned well should be, because after this latest Pirates of the Caribbean film, the series is really starting to show its age.
Why else would you bring back Henry Turner’s parents, or for that matter, tease the return of Davy Jones in the post-credits sequence for Pirates of the Caribbean: Dead Men Tell No Tales?
This explains why the studio might be planning ahead.