Ideas for a new expansion

[Arutan]

But just because we beat her, it doesn't mean she's dead. And that's assuming she was a flesh-and-blood creatures, and not a Primal, I which case there's nothing stopping whoever summoned her from summoning her again just like literally every other primal we've ever faced.

And if she wasn't a Primal, she still wouldn't be the first boss to limp off after a licking from us, only to show up later in the story.

Captain Madison has that honor, and there's also Edda, Nero, several members of the Heaven's Ward, and teeeechnically Thancred.

Captain Madison do was dead and had his body exposed to Leviathan's aether which resurrected him in this weird japanese hentai form.
Edda got resurrected by dark magic in the dephts of PotD.
Nero never died at some point. He just ran away in the Praetorium.

I just checked my Encyclopaedia Eorzea and Siren is classified as a Bloodborn Spoken monster, so not a primal neither a Voidsent. The Pharos will likely just be rebuild by the Maelstrom and if Siren's corpse there is, they will probably just dispose of it. And she do is dead 'cause the after quest dialogue is talking about the avenge of the first boss' sister.
Where I can give you a point is that the Encyclopaedia use Sirens with a S as if there are many, though mostly considered as legend stuff.

/10characters