I have to wonder, with the FF6 music in the most recent trailer, Krile playing an FF6 origin job, and her parents (theoretical) outside a portal that when compared against FF6 feels similar to the portal to the world of the Espers--which was tragically sealed.

I'm assuming that her parents have been trapped on the other side this entire time. And to take it one step further, opening said portal to rescue them will most likely open up the Source to something horrible.

Finally, if I can speculate just a bit more, I have to wonder with Thancred and Urianger seemingly taking another side in the coming conflict, if they will be against rescuing her parents. As in not rescuing them is safest option for the world and putting them in direct conflict WOL and present company.

But this is just my theory. Probably wrong.