Personally, I disliked every perspective of the quest.
Gameplay wise, it's badly done. Bunch of unnecessary running from one end of the instance and back because sequence breaking is bad. And the combat there has the complexity of a level 4 Gladiator.
In terms of story, all it does is remove all impact from The Tower of Babil and the Zodiark trial because Fandaniel just casually straight up tells you Anima is made from Varis' corpse and that the Zodiark trial is coming.
People say that as narrative point it tries to establish how much more powerful the WoL is compared to regular people, a difference that's basically a commonly known fact...