It could be a blessing in disguise. It is a cool premise for a show, but I can't see it as an ongoing story of multiple seasons. Perhaps an extended mini-series format of 13 episodes is best for this. Tell the story and move on.
Anything to do with the conspiracy and the sub is great, but whenever they drag out the sub plots of the island girl and the thug it becomes less than average. Hopefully they can give the main story a proper conclusion with the episodes they have left.