I was hoping something more would happen with Nero absorbing darkness. World of Darkness in FFIII was the home of the 4 warriors of dark, and I thought this would be a pretty good chance to show a hint as to what the dark knight class will be about in FFXIV lore. I was totally expecting Nero to be on the verge of going dark knight in 2.5, but then he just discards the darkness and escapes. Just as Yuguri was a tease for Ninja class in 2.2 cutscenes, I was expecting Cid and Nero to tease Machinist and Dark Knight.