I picked one at random so I could see the votes. Not my opinion.

Asuming they WILL be erased (like, doesn't retroactively erase them), Furina with no doubts.

She's so incredibly annoying, and all the more with how she was overused by Hoyo.

So I voted for her.

But if it was retroactively, then I would pick Ei, because then Scaradouche would maaaybe be erased too, or at least become truly different.

Yes, retroactively.

It would be as if they never existed, and anything they helped to do in this situation would fundamentally not turn out the same.

Venti -> mondstadt would be still ruled under another god/enslaved!

Zhongli-> Most of Liyue wouldn't turn out like it did and not as much focus on contracts

Furina-> prophecy of fontaine would have come true

Etc.

Well, then it's Ei more than Furina cause no Scaradouche.

But I don't think the prophecy would have come true without Furina though - I have full confidence Focalors would have found another way to save the country.

Well, you get what im saying tho; it just would have overall diff conditions than teyvat today.

The whole point of Irminsul and Scaramouche's story is that it doesn't erase your actions - it erases you from them, so they would still happen, just without you in it. Raiden Gokaden did fall, after all, even if it's not the cause of Kunikuzushi anymore.

If we do abide by these rules, though, I suppose Ei, simply because of how much I dislike her. Inazuma would be pretty fucked then, but at least it gives space for someone who actually wants to be, and would be a better archon.

As for Scaramouche theoritically not having another one of his betrayals after Ei is erased, I think he would still be affected by that (since Irminsul doesn't erase your actions!) , just maybe he wouldn't remember who his creator was, or something.