Will Sin-eaters get the Voidsent treatment?

[Vyrerus]

Well, other than the already stated Astral vs. Umbral differences, their origin is also inverted.

Voidsent were created by the Ascians' plans succeeding all too well. When the Flood of Darkness happened, it was intentionally done without the knowledge that flooding the shard wouldn't rejoin it. Only in the aftermath did they discover that this was not the way to go.

Sin Eaters were created when Ardbert half killed a fused Ascian with the Blade of Light. This ruptured the delicate balance the Ascians had brought about, cascading into a Flood of Light that was stopped by Minfilia. This rendered the First salvageable for a Rejoining, and so the other Ascians, namely Emet-selch, took measures to control the Sin Eaters. There was the creation of Vauthry, but if you notice when we defeat Mitron in Eden, there was no need to soak up his soul, and his soul did not have the same properties as all of the Sin Eater Light Wardens.

It's never explicitly stated to my knowledge, but this implies that the Light Wardens were crafted by the Ascians. Designer monsters, so to speak. Which we know now from Amaurot and Elpis was their specialty.

It could be that Sin Eaters would have developed a more tranquil form of the Voidsent culture we see now in the 13th, if they were left alone or if the Flood hadn't been stopped. They weren't though.

Not too mention, the Lifestream for the 1st is intact, unlike the 13th. Meaning that Sin Eaters still have the flesh and soul dichotomy going on, whereas Voidsent barely do, sort of.

[Iscah]

I think it's stupid to ask 'will we give sin eaters the voidsent treatment', because I think we already did; the stuff we're doing isn't new, it's giving Voidsent the Sin Eater treatment, in a way that's more suited for their traits and needs.

That's a good point. It's not that we treated the sin eaters and voidsent differently; in both cases they attacked us and we fought back.

The difference is that the eaters just kept attacking and mumbling "braaaains aeeether" while the voidsent backed off and said "wow you're really strong, I'm not going to try to fight you, please don't hurt me" – and once that happens, we're able to engage with them.

If the sin eaters had been similarly lucid, we would have tried to engage with them too.

[Lyth]

...

I don't think that the sin eaters were deliberately 'crafted'. After the Flood of Darkness occurred, the First was the most ripe target for a Rejoining because of its natural opposite polarity. The Ascians perpetually failed to achieve this over the next ten thousand years due to a series of major failures and arrogant oversights, the last of which resulted in the complete and utter annihilation of their leadership and subsequent dissolution of their faction.

Mitron's transformation into Eden was also unintentional, and his experiences match up with what we've seen of the sin eaters to date. He was completely discarded without regard by Emet and Elidibus, left locked-in a state where he couldn't even move or do anything except feebly whisper to Loghrif's reincarnated form for help. Emet's death at the end of Shadowbringers really reminds me of the showdown between Mengsk vs. Kerrigan at the end of Heart of the Swarm, and I almost wish that it could have been a Voidsent to do the deed for some picture perfect poetic justice.

[Vyrerus]

I don't think that the sin eaters were deliberately 'crafted'.

It's a good thing I never said that. I said the Light Wardens likely were, which we know that one of them was, that one being Vauthry.

To wit, why is it only Light Wardens flood into the nearest being after their defeat in order to perpetuate the blighted sky? Why is it not a trait of all Sin Eaters?

Do try to stay on topic, please. And maybe do more than skim read.

[Lyth]

...

That's how aetheric corruption works, though. Eden was effectively the first 'Lightwarden', having an enormous amount of aspected umbral aether. It doesn't simply dissipate on its own. In Emet's case, we were able to dissipate it largely because he was astrally-aspected, likely as a result of his tempering. Perhaps on some level, we restored the balance in both our souls when we impaled him. In Mitron's case, we had to break it down by elemental component and then pit ourselves against an umbral-aspected being in order to dissipate it.

None of this was intelligently planned. The Ascians tried to exploit whatever they gleaned from their previous bungles, but they were more cruel than clever.