To me, Ala Mhigo (Gyr Abania) seems like Ishgard (Abalathia's Spine) and Sharlayan (Dravania) - backstory given to a region before that region is in the game specifically so there's an excuse both why you can't go there now and why you should go there later. I don't imagine that either we'd skip it or that it would be the cliche liberation.

My personal preference at this given moment would be that our involvement just completely tears that nation apart. Cities at landbridges between realms usually have a long history of conflict. Driving out the core Imperial structure would create a power vacuum into which would be drawn Garlean loyalists, Kingdom loyalists, reformists, Fists of Rhalgr, upstarts... I'd love it to be a city like Whitegate - full of interesting characters and factions and perpetually in conflict for the rest of the game.

We've seen as much Garlean military as we have Allagan remnants, though, so unless we're in for more than cermet and magitek and bleak black fortresses, I don't really care to see the homeland, lol. The throne room didn't look much different than a castrum. Unless we forge some truce and have an excuse to see a unique culture going back farther than their military industrial revolution, I'd rather they just collapsed off screen like the previous Emperor and let us go about our business somewhere like Thavnair or Othard or, hells, even the New World.