Was there a reason we never got to go Koshu during Stormblood?

[Hallarem]

Koshu being the large island with a city called Bukyo, and the mountain Daitenzan; I always felt this was glossed over, and never really spoken about amongst players and the developers.

While not the first time something like this happened if you consider some mystery places in and around Aldenard as well.

Pardon my title error (wish I could fix that).

Most likely because they are saving it for a Hingashi expansion, that goes full samurai.
Unless they are lazy and blow it up like they did Garlemald because they are allergic to story with politics atm.

I'm still coping for them to open up Dalmasca, Landis, Bozja, Nagxia and other places that are mentioned, but hidden behind the Mist that is Ilsabard.

So many interesting places, but they decided to take the story into outer space, ends of the universe, time travel and more. So scaling down the story at the moment is a challenge they face.