I wasn't a fan of the "dynamis" thing, because it wasn't foreshadowed properly as a "thing". Had they mentioned something about an "unknown force next to aether" in past expansions, this would have worked better.
That Zodiark was a Fandaniel sock puppet didn't work for me, either. There was potential there making the sundering an honest mistake born out of a misunderstanding, and Zodiark not being evil at all, and instead of freeing him being a catastrophe, he could have been the key to salvation for the planet. That would have been a much stronger plot twist.