Well I looked into a similar version of superluminal gravitation and I have to say it didn't work. I didn't get a magnitude as large as yours. I can't see how it would be that large. I also can't see there ever being a test for gravitational waves that will work if it exceeds light speed. I do expect that a detector will be built that will find the gravitational waves and that the speed of the force carrier will not exceed c. I may be wrong but I doubt you are right either. As I said the magnitude difference you have between light and gravitation is too high

It is obvious that both fundamental theories, i.e. the General Relativity (GR) and Quantum Physics (QP), are incomplete so we cannot answer many fundamental questions, for example:

1.

What is the origin of dark matter (about 27%) and dark energy (about 69%)? Is there a new cosmology?

2.

Why gravity is such weak in comparison to weak, electromagnetic and strong interactions? Maybe there are two different spacetimes?

3.

Why M-theory and quantum-gravity theories are still the useless theories? Are there some fundamental errors in the initial conditions? Maybe the closed-strings/loops cannot be flexible? Can flexible closed strings lead to invariant gravitational constant G?

4.

Why we cannot detect the luminal gravitational waves? Are they in existence?

5.

Why entangled particles can communicate with superluminal speed? Only some superluminal entanglons responsible for the quantum entanglement can in a coherent way solve the spooky action at a distance - other interpretations contain mathematical tricks that cannot be realized by Nature.

6.

Why we up to now cannot unify the GR and QP? Maybe it is impossible?

And so on….

In my opinion, it leads to conclusion that the assumption that the two leading theories are incomplete only is incorrect. There must be in existence a third fundamental theory which should lead to the initial conditions applied in GR and QP. Such third fundamental theory should solve all the unanswered fundamental problems. And within the Scale-Symmetric Physics (S-SP) we can do it. The S-SP is the coherent theory, it does not contain approximations (it is the unique theory so it is very easy to falsify it), it does not contain mathematical tricks (for example, it does not contain the indeterminate mathematical forms which appear in many mainstream theories), and it does not contain free parameters (!).

As I wrote before, the GR leads to the superluminal non-gravitating tachyons whereas the saturation of interactions and the law of conservation of spin lead to the phase transitions of the Higgs field composed of such tachyons. Within such theory I obtained a thousand of results consistent or very close to experimental data and the physical constants. Such coherent theory should be treated seriously. Due to the excellent results and smallest number of initial conditions, we should not ignore it. The succeeding phase transitions lead to

-the Higgs-field scale associated with gravitational fields (size about 10^-64 m; speed about 10^97 m/s),

-the superluminal entanglons responsible for the spooky action at a distance - it is the quantum entanglement scale (size about 10^-45 m i.e. this size is smaller than the Planck length; speed about 10^68 m/s),

-the luminal Einstein-spacetime scale (size close to the Planck length i.e. about 10^-35 m),

-the baryonic scale (size about 10^-15 m),

-the cosmological scale (size about 10^24 m).

And this theory leads to following answers.

With reference to 1:

The origin of the dark matter and dark energy follows from the cosmological scale. Dark matter and dark energy particle is the luminal Einstein-spacetime component. Dark matter is entangled with matter whereas dark energy consists of free additional Einstein-spacetime components so it leads to the cosmological constant. I obtained following abundances: matter 4.91%, dark matter 26.46% and dark energy 68.63%.

With reference to 2:

S-SP shows that constants of interactions (not coupling constants) are directly proportional to density of fields. And the ratio of density of the Einstein spacetime (it is associated with electromagnetism) to density of the Higgs field (it is associated with gravity) is about 4 multiplied by 42 powers of ten - it leads to the experimental data.

With reference to 3:

My closed strings are inflexible and there appear the succeeding phase transitions of the Higgs field - it leads to the gravitational constant (I obtained value 6.67400 multiplied by -11 powers of ten).

With reference to 4:

In the Ricci tensor for weak gravitational waves, there appears the d’Alembertian so the speed of light in “vacuum”, c, as well. And it is the mistake. Just the c is an arbitrary assumption. Just geometry of gravitational fields can be associated with non-gravitating tachyons as it follows from S-SP. S-SP shows that we never will detect luminal gravitational waves but maybe in future we will detect the luminal flows in the luminal Einstein spacetime.

With reference to 5:

S-SP shows that the spooky action at a distance follows from the exchanges of superluminal entanglons between entangled particles.

With reference to 6:

GR and QP are associated with very different spacetimes so we cannot unify them within the same methods. The quantum-gravity theories still will be the useless theories. We can unify the GR with QP only via the succeeding phase transitions described within the S-SP. Just there is not in existence a super-force that follows from unification within the same methods.

Some recapitulation is as follows. The smallest number of initial conditions applied in S-SP leads to experimental data and VICE VERSA i.e. only the speed about 8 multiplied by 88 powers of ten times greater than the c associated with propagation of gravitational field (not with propagation of the gravitational potential energy that is luminal) leads to tremendous number of quantities consistent with experimental data.