Hello Paul,
I recognized your name by cross-referencing to my library. Without letters on the spine; your book is hard to identify. We must have crossed paths at a conference, perhaps CCC-2 in Port Angeles. You should be made aware that a LARGE number of serious researchers ARE pursuing your ideas, but while openly in secret because they have cast things in very different terms. Of course; I think the universe is inside-out, so your gravity model makes perfect sense. And there was an FQXi essayist a few years back with a sink drain model...
You can find a fairly precise analogy in the work of Dvali and Gomez, because your PAEPs are seen to be gravitons. This is easy to generalize into a full theory of gravity, which I have called "Gravitation by Condensation." But the work of Jacobson, Padmanabhan, and Verlinde on theories of thermodynamic or entropic gravity point in the same direction and are basically examples of external gravitation. This notion is easily combined with Einstein simply by noting lines of space converge to a radius not a point. This then is the surface onto which gravitons settle.
My essay has links to some of this material. There are hundreds of papers to reference though. See Barcelo, Liberati, Visser, papers on Analogue Gravity. See Steinhauer et al for experiments of note.
More later,
Jonathan