A new skeleton ship battle next update?

Remember the Forsaken Shores trailer made a few months back? We all know by now that Jim was casted away from his crew after an event of... Attempted Murder... He seemed to row his way to Thieves Haven. But, remember the chalice that was in the sand? I thought up a theory 'bout this and I wanted to share it before the Shrouded Spoils Expansion rolls up on shore on the 28th. So here it is...
The Chalice on shore seems extremely similar to the chalice to the one told of in the stories how FlameHearts crew drank out of and turned them into skeletons. Maybe the next Expansion will also add in a battle against Jim and will have a lot of new mechanics.
And yes I know he isn't on Thieves Haven now but, what if he did drink out of the Chalice or what if he took the Chalice with him on his journey? Maybe we will fight alongside Captain Morrow, against Jim and his crew of skeletons himself?
But that's just a stupid little "theory" of mine. I hope you enjoyed either way!