
Ul'dah certainly has more of a hand in dealing with the Ala Mhigan refugees for certain, but for the most part, they are a downtrodden and abused people, taken advantage of by wealthy merchants not just as a source of cheap labor, but also as scapegoats, muscle, and expendable resources in their various plots to acquire power in the Sultanate.
I'd also suggest trying to learn the lore of Ala Mhigo in depth as you go, because you'll certainly find other Eorzeans questioning any effort to reclaim Ala Mhigo. It was the aggressor nation for the Autumn Wars in which Ala Mhigo had attempted to conquer Gridania. The Eorzean Alliance formed because of that conflict, actually. Likewise, given the previous King of Ala Mhigo needed to be ousted in rebellion, you might want to consider your character's role as a Noble and what that could mean towards your cause.
I'd also suggest trying to learn the lore of Ala Mhigo in depth as you go, because you'll certainly find other Eorzeans questioning any effort to reclaim Ala Mhigo. It was the aggressor nation for the Autumn Wars in which Ala Mhigo had attempted to conquer Gridania. The Eorzean Alliance formed because of that conflict, actually. Likewise, given the previous King of Ala Mhigo needed to be ousted in rebellion, you might want to consider your character's role as a Noble and what that could mean towards your cause.