haha that would certaily be a plottwist. xD
but if Greta would be any of the gods I think she actually would be Hephaestus with how tech-savvy she is and studying engineering.
I think that is a very Hephaestus thing to do.
Spoilers for the newest Archon Quest in Genshin Impact relating to Furina:
In a kinda similar fashion Furina was cursed by her other half Focalor to have an eternal life, even though she was the human part of her, so also living a longer life than she actually would have had, bound to the existence of the Hydro Archon.
It is a little more complex than that, but Focalor decides to end the reign of the hydro archon and to kill herself with the energy gathered over hundreds of years.
With the Archon dead and Furina freed from the curse and the bond of her god-self, she was granted a normal life with the lifespan of a normal human. (at least that's what they said)
So following that rule there is the possibility that Asterion could be freed from the shakels of the labyrinth and granted the lifespan of a normal human male (he would be in his 30s so probably 50-60 years).
I don't think that it is a likely outcome but something that could be considered in relation to: "can Asterion exist without the labyrinth".
Viewing post in What's to come/Possible Endings (Spoilers for Chapter 19)
maybe Asterion is Minotaur-Jesus?
Jesus was also dead and lived again... kinda like a Zombie xD (I am sorry for my terrible joke)
But that's a good point, we don't necesarrily know what his existence now could be classified as or what it is like
If his existance would be something like a Zombie or a ghost than why would he feel pain.
He was ripped from the afterlife, that is true, but I don't think we had an explanation, about what his existance is like at the moment, except for undying.