Contemplating the Void

I guess I wasn't just crazy, then, when over on Reddit I commented once that I thought the Void reminded me perhaps of the Superflow from Marvel.

Though while that covers things structurally, I'm still intrigued by what purpose the Void serves from a thematic standpoint.

(Like for instance in Marvel, the Superflow is also structurally the emptiness between the multiverse, but thematically it's "the place where people go when they dream", and multiple characters use it to traverse reality(ies) in various ways as a result.)