Now, I'm going to go a little crazy here, so please bear with me.

Ahem. What we now know about the Flood of Light is that it did not strip away all of the elemental aether of the First - it simply hypercharged it into an Umbral (Light) state. If that's the case, then what the Flood of Darkness should have done is hypercharge the elements on the Thirteenth into an Astral (Dark) state. This would leave it in a state of "high activity," constantly rising in energy until all distinctions between the elements ceased to be. Fire / Earth would meld into magma, Fire / Lightning into plasma, etc. Logically, it should all eventually collapse into a singularity that devours all aether that gets too near; aether can't be pulled out of it either due to the density and, even if it could, would just be "all-aspected" (Astral Dark) aether. A black hole, in layman's terms.

But what if you could slow it down? Light aether can do that. If you pumped enough Light aether out you could, theoretically, slow down the constant activity of the Void. If you were able to do that, slow it down to the point where you could filter out and separate the elements, then you could, in theory, reconstruct the Thirteenth from the Void it has become.

In theory.

It's not like this would necessarily be a bad thing, either. Sure, the Ascians would have another chance at rejoining it to the Source... but it would put the long-suffering souls of the people who became voidsent to rest, as well as stop voidsent incursions into the Source. Permanently.

If you could do such a thing, and as a famous scientist once said...