Some after thoughts:

With Zodiark's death and all the sacrificed Ancient going back into the aetherial sea, at some point they are going to be reborn, and and likely keep their creation powers since those sacrificed were not really sundered I think. So down the line, you are gonna have a bunch of characters able to act like gods again. It's probably not something the game will explore down the line, but still food for thought.

The whole time shenanigan. G'raha's original timeline is now an oddity, cause if we caused a time loop to happen, then G'raha's future should have never happened in the first place, yet it needed to in order to save the first. Cause if we died in G'raha's timeline, then the time loop wouldn't have happened, and Venat might have never caused the sundering (unless she had already decided on it, even without meeting us).