I reckon 3.4 is going to tantalise us with some Ala Mhigo plot threads in the same way that 2.4 teased us with some Ishgard plot threads. Perhaps we'll receive a message from the Ala Mhigan resistance. My gil's on maybe Yda sending us a message about some dire circumstance or revalation that makes the liberation of Ala Mhigo possible, and we go to investigate.

Then in 3.5 we fight for control of said thing; maybe it's a primal-powered machine that the Garleans used to mind control a load of Ala Mhigans, and once we take that thing out, suddenly we have a rebellion on our hands.

Then 4.0 is about the Liberation and Rebellion of Ala Mhigo. I reckon Gridana and Limsa wouldn't do anything to help, and obviously it's a sensitive issue for Ul'dah, but maybe we'll finally get our chance to fight Ilberd with Raubahn by our side.

Either way, 3.4 and 3.5 are going to be justifying why we go to Ala Mhigo. Whereas in 2.5 and 2.55, we were forced to flee to Ishgard, in 3.5 we will be going there of our own volition.