
Originally Posted by
Iscah
What historical records? If you're proposing to shut down the entire world, there'll be nobody left to keep records. Or read them.
To play Devil's Advocate: Maybe the people of those worlds could summon a primal akin to the Superman villain Brainiac, a living machine whose modus operandi is typically to record all information a planet has to offer while also systematically destroying it. The end goal being to be the only thing left in existence, presumably with perfect knowledge of what the universe was like.
Final Fantasy even has a villain pair like that already in FFIV: The After Years' primary antagonists: The Creator and his cohorts, the Maenads.
FF4: TAY Spoilers, natch:
The former utilizes that game's crystals to keep records of the histories and evolution of entire worlds, then has those crystals retrieved and drops his planet-eating space station, the True Moon, onto them to wipe out worlds he deems unworthy of continued growth, out of an irrational fear that if left unchecked, the people living on those worlds will repeat the tragedy that wiped out his own race and consumed his own world.
The latter are, well, his minions. They are basically superhuman Rydia clones, right down to being able to summon Eidolons, albeit only by stealing their souls and brainwashing them, as the Eidolons would never obey her commands otherwise.
The After Years isn't exactly the best written game in the series, and a lot of its troubled writing comes down to copying whole events and plot elements as fanservice to the original FFIV. But conceptually, I like the idea of both villains and think something like them could work in FFXIV.
Though to be frank, the fact that all of the above are not just antagonists, but outright villains, says a lot about the lens through which "record history, then destroy the source" is viewed as a concept.
There's also a ton of issues involved with summoning a primal, such as the rampant consumption of aether, tempering and the sycophantic behavior of tempered thralls, and having a God complex by virtue of literally being Gods, man-made or otherwise. Oh, and we'd also have to find a way to get the information to the Source, 'cause if it's still on the relevant reflection to be rejoined, it'd like as not be wiped out along with that shard. And we'd also need some means of retrieving that information from whatever it's contained in—to say nothing of having a means of containing it in the first place. And we'd still have to find a way to make a rejoining happen without causing/amplifying a calamity on the Source, which is seemingly impossible and at the very least improbable.
So... probably not feasible in the slightest. And also still pretty horrifying in terms of how many people would have to die. There's really no such thing as a humane way to drive an entire world's population into extinction.