Yoshi said we'll be going forth between Ala Mhigo and Doma, as our endgoal is to liberate them from the Garleans.
If you really think about it, that makes sense - the Ala Mhigan resistance has shown time and time again that they are not capable of overthrowing the Garleans by themselves,
the Eorzean Alliance can't take on the Garleans by themselves either, but if several regions all rise against them all at once, there might be a chance where there was none before.
So making allies, connecting with all the regions under Garlean opression, etc. makes sense

But don't worry, freeing Ala Mhigo is still a main plot focus (...sadly ).