Could this idea be similar to zero point energy? I'm not talking about the absence of a Vacuum, but the absence of any quantum effects in that region of the vacuum because no massy or massless particles or waves are in transity.

Maybe we could think of the fabric of spacetime as an actual fabric, with the threads being field lines or wave/particle transits. Then, when it is pulled tight the threads separate revealing holes. I think this is the description of virtual particles --holes that act like particles and have associated phenomena like velocity, etc.

I was just trying to imagine the opposite of a blackhole, which is a mass in an infinitely small space -- mass in an infinitely large space. Of course, we only speculate that a singularity is an infinite density. Maybe the rules break down and become something else. Maybe it only seems to be infinite in our universe's reference frame and the singularity has its own subquantum reference frame that allows for classical physics inside.

Maybe our universe is the blackhole singularity in another universe. The addition of incoming mass both allows for a continuing and accelerating expension of the subquantum universe and accounts for the missing mass because its effect on the fabric of spacetime is felt from the other side before it has the opportunity to be scaled down and fall through a hole in the threads.

Of course, I'm just making this up as I go along.

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"What you think you thought you saw you did not see." Agent J, MiB - Manhatten Bureau