That's... actually pretty damn plausible, isn't it? I mean, I maintain that Bahamut was the one influencing Nael in the end; Nael wasn't using Bahamut's personal special attack (Megaflare) for nothing. But the rest of that... yeah, that's extremely possible.
If I were to take a more refined stab at it, I'd say that Nael originally intended to ...
Wait, wait, wait wait.... wait.
Wait.
Bahamut was never allowed to roam free. He was locked to the Labyrinth, and chances are he been stuffed right back into it by 5 years after his appearance, which is possibly what we're going to see in our unique openings and why it's so calm when we get there.
Xandes, was stored in some sort of hypersleep until he could be reawakened (a legend which became he died until he could be resurrected, over time). Tower of aetheric crystal under the center of the world as far as the planet's soul is concerned...
OH, HOLY HELLS!
What if Odin was related to the Allagan? For a time, Bahamut would have been locked in the Labyrinth until the power struggle became too much for the land to take, so the Allagan built a machine and exiled him. That has to be related to why Xandes is sleeping and why Odin reappears now. They have to be connected.
Perhaps Nael saw himself as fulfilling the prophecy by reawakening the Allagan to crush the short-sighted fools in Garlemald who would surely win this war and take over the Allagan's homeland, unimpeded? By calling back Bahamut, he would force Xandes and Odin to return and purify the situation...
Ohohoho, but if Odin has Bahamut's number so easily, who will stop Odin?
Let's bring that right back around to my theory that the Garleans are trying to create a bastard fusion of Primal essence and magitek... and we're right back to the golden Final Fantasy Online standard of Odin v. ALEXANDER. As the last-primal-standing on the elemental wheel, Odin would have to go up against something - why not the mechanistic creation of a force that seeks to wipe out the primals, perhaps by fighting fire with fire?
... Okay, so maybe that last part is a little out there...
Unless it's the other way around? Alexander might be the Allagan's; when Odin appeared in Final Fantasy XI, it was the Alzadaal that built Alexander to defeat Odin... similar names. Or maybe a red herring? Or maybe a crazy Moose?
