The thing about Ala Mhigo though is it's essentially sealed off from the rest of Eorzea - 1.0 clearly stated it's now nothing more than a massive Garlean fortress, whose inhabitants are prevented from escaping southwards by a huge wall. Even though after Operation Archon
the Empire's advancement into Eorzea has been essentially halted, if not completely ended - after all Gaius's last words "And so my conquest ends here," even after Archon Gaius's strongholds still remain filled with Garlean troops, although they could easily be considered to be just remnant forces.
Despite that, I doubt we'll be seeing Ala Mhigo any time soon - Ishgard has long been promised as the next city state to be accessed - it's zone line actually exists in the game (although currently blocked off), the city itself is still 'free' (as in, not under Garlean control), and it's easier to access. Unlike Ala Mhigo which has no zone connecting to it (the only way it could be accessed by land is if a new zone was added to the East Shroud to lead eventually towards it, but Castrum Oriens is blocking the way). So yeah, sadly I don't think Ala Mhigo will be made accessible for quite a long time.