I mean, the jobs aren't really tied to the countries we visit necessarily. Not like Dancer or Gunbreaker is tied to Norvrandt after all. They just... kind of exist. Red Mage was also kind of a weak attempt at Ala Mhigo honestly, and Astro was a Sharlayan thing. I would be very happy with more Sharlayan stuff though. Especially jobs and lore. As this is wrapping up the first story arc and the main heroes originate from there (or at least spent noticeable time there) it would be a good place to visit. Wrapping up the big bad, the main heroes origins, so on and so forth.

Also what Ark?