Originally Posted by
Cleretic
So it's a good thing we got that, then. This is the exact same details we got from and through Emet's perspective, it's just that we got it across about four or five different scenes in two expansions, plus a short story or two. The Nier collab is just getting compressed into a few flowery passages with no interruptions.
If you REALLY want to wring useful FFXIV lore we didn't have before out of this collab, then the most you'll actually get is the story of A-towa-cant in Thyrus' weapon story, which actually does have a few new pieces, as well as gathering details that actually aren't especially forthcoming in XIV itself.
You could also see that depiction of the End of Days and the Sundering and notice that it's basically the same as Venat's own flashback, which is useful in confirming that the two accounts do corroborate and validate each other as sources. Which for the most part is probably not needed, but it's a useful point for at least one person I can think of.