I can answer some of the questions submitted. Others I might guess at and some I dont have the right background to relate to. If I dont answer something you consider important please redo and resend it.

1. Coldcreation
I dont have the specific 6 easy pieces of feynman and dont know how to find the pages referenced on line for myself and for Bogie. I am kind of busy to get the book right now.

My particle is intended to perform as exactly like Newtonian attraction as possible. When not in equilibrium, its net effect causes redshift and bending of light by 'pushing on photon streams. The moon blocks a path of paeps so the presswure on earth is lesser where that path arrives. The net effect is the same as attraction and all explanations bout the time delay of tides etc would apply the same.

I am not fully cognizant about the properties of gravitons in order to make comparison. My paeps are described in detail. Gravitons are usually sought in deep space and very closely associated with waves in nature. I could review gravitons in order to respond better.

2. Bogie

Maybe the topics should be merged, but I chose to separate them as major subtopics.

Paeps are to us are the quintessinal 'speed of light' They are why radiation moves at that speed. They have always moved so and are not acelerated. Essentially everything qualifying as a paep moves at that speed. Paeps can dapart from the strict definition possibly exist as nutrinos or other slightly slower or shorter wave particle.

Paeps demonstrate something like momentum by pushing on mass. They do so because they are the longest of wavelengths. Mass require having wavelength.

I dont know about testing. Perhaps the correction to redshift suggests a test of the difference with curved spacetime. I think the concepts may be able to coexist.

Paeps dont get used up because of a form of recycling. Paeps become di minished because they take on the form of other radiation such as light. They acquire shorter wavelengths. Over long transmission periods the waves of the light radiation will stretch back out and become paeps. An interim step in this process is the microwave background. Microwaves have longer wavelengths than light and are partially stretched out light waves. They are the first stage in the reason that the night sky is not solid starlight as asked by Olber in his paraox.

When paeps hit mass occasional contacts do produce heat. It is the source of the suns heat and planets likewise generate some heat of their own. In this way the energy created during pressure contact is disemminated as heat and also as light. Photons are paeps that gained wavelengths.

All quantum particles, like photons, form from paeps that acquire spin. Joining into groups is a slow process requiring the low probability impacts that are the same as those occurring within a large mass. Over time those impacts can create and increase spin of already created mass particles and of the paep itself. Sufficient spin causes particles to merge together and the joint spin holds them together.

Paeps acquiring wave frequencies take a step within the spectrum of existence toward slowing as mass. Shortening wavelength into spin defines mass. The more spin the less quickly they can move.

Whether mass existed in the beginning, I dont speculate. However any distortion in the sea of paeps can gradually create mass.

My section on angular motion will begin to explain why masses dont crunch together.

3. Pkay

You were right to focus on the contribution of spin .

4. Coldcreation

The physical mechanism of gravity is only its being the essence of things.

Attraction or repulsion do yield the same observations

I cannot argue your views supporting general relativity. I am painiting a different picture of gravity which yields many different perspectives about our universe.

5. Nereid

The structure as a consequence of the motion of paeps is being revealed in steps. We have touched on waves, spin, particles, mass from paeps, The infinite and essential existence of paeps, etc.

Remove air from a container and you get a vacuum. But the space within still exists. Remove paeps and there is nothing.

I mentioned Olber's paradox above.