@Fil Albuquerque,
I'm not very good at this, kinda dumb actually, but I think I've got a rough idea of what you've theorized.
I like the donut image, for practical purposes, I think as we learn more about what happens inside of Black holes we might understand light speed better.
I've done some thinking about what might happen to time, in relation to perception of time, as you approach a blackhole and it gets pretty weird.
The donut image makes it understandable, but the actual curving probably happens in a way we aren't equiped to understand, like the big bang happening everywhere at once.
In your model, then, we exist somewhere in the donut hole?