Well we already know we're going to Ishgard in 3.0, and Ala Mhigo is on the way to Garlemald. If they introduce Ala Mhigo and Garlemald in separate expansions, it'll probably go like this:


Ala Mhigo will round out the Aldenard sub-continent, excepting Sharlayan, leaving us with nowhere to go but through Garlemald or across the sea.