The Ascians are the only thing that still has a single shred of mystery, as we haven't met all of the remaining ones, nor do we know the fate of all of them. This is why I'm so annoyed when people say stuff like "I'm so tired of the Ascians, can't we move on from them already?" They are single remaining plot thread and shred of mystery from the base game we have left and have been the antagonists since 1.0. Everything else, including most of the Ascians, are done and over and wrapped up and shipped off, never to be seen again.

What did Dawntrail introduce to fill this void? Nothing. We wrapped up just about everything. There's some lingering questions on what to do with the people of Solution 9 and their horrible regulator system, I guess? That's not really a threat or mysterious, though. We have the Azem Grail, but there's not much urgency or mystery behind it, because we already know what it does.

What is mysterious about Tural? Nothing. We solved every mystery it (barely) gave us. What is dangerous about Tural? Nothing. We killed the one war-mongering guy and stopped the extra-dimensional AI teenager that appeared and wanted to eat everyone's souls. Tural doesn't feel like a Final Fantasy nation because it lacks this mystique and wonder all the other nations have. It feels like a Disneyland dark ride with a companion in the same seat as you that won't shut up the entire ride.