So, about Zenos... (SPOILERS)

[kaynide]

After the way Yoshi-P imitated Neo from the Matrix in the Live Letter dodging Zenos questions, I'm pretty sure he's not dead. And Yoshi-P raised some interesting ideas on whether we saw what we thought we saw with his commentary that what we saw in Ultima Thule is shaped by our perceptions. I didn't play XI but from what I've heard described of what dynamis was there, it seems to fit that idea.

So it may not be a matter of bringing him back. Things may not have gone down how we think they did.

Little off topic, just filling in gaps:

Dynamis in FFXI wasn’t a sort of energy, but rather an alternate dimension where “the bad guys won”. Essentially they are just raids set in fallen/“nightmare” versions of the main cities.

Aside from the void/monstrous aspect, it’s probably fair to say the two concepts are entirely alien from one another.