>>96851451The problem with go to the "Other World" or The Unknown is that McHale doesn't want represent it like a tragedy, so Winter can't represent a tragedy by someone who have died.
Another problem with your idea is that OTGW doesn't work without the unknown in its story, because the normal world isn't important to it so we can't stay there for a long time displacing the unknown forever.
If we use the real world like the main scenario of a sequel the correct way to use it is to represent The Purgatory with this, the path in middle of the hell that you need to cross to reach the Heaven. In that way we can complete the symbolism of Wirt as a boat floating in a stormy river (the life) and trying to reach the sea (The Unknown), and we can complete the simile between this story and The Divine Comedy.
I like your idea about Spring and it can be used to represent The Paradise in the heaven where Dante is finally reunited with Beatrice.