This to me, this seems to be misguided nonsense. You don't seem to have a good grasp on what we do know about gravitation. I don't know of anyone who has assumed that dark matter and ordinary matter are "anchored" to one another as you imply. We see situations of gravitational lensing and galactic rotations that suggest, dark matter exists both in close inertial relationships with ordinary visible matter and to some extent as separate from any apparent inertial relationship with nearby ordinary visible matter.., galaxies and galactic clusters as the case may be. Following is just a bit of my own musings on what little I have seen in the observational literature. No one really knows at present what exactly dark matter is. Gravity is generally a weakly defined interaction (I hesitate to refer to it as a force), between objects of mass in space/spacetime. Gravity represents a strong interaction only in a strong gravitational field.., IE near gravitational centers of mass associated with objects like neutron stars, black holes and very close to large compact stars. It is not does not represent a strong force, relative to galaxies, except perhaps near a galactic core.., where we have evedence of the existence of SM black holes. Since dark matter, unlike all of the visible matter we know of, interacts only gravitationally and not electromagnetically, the largest part of dark matter associated with any stable galaxy or galactic cluster, should be only weakly "anchored", to use your phrasing, to the associated visible and electromagnetically interacting visible matter. Once this is taken into account any dramatic dynamic event, as in the collisions of galaxies and/or galactic clusters, should naturally evolve in a manner where the dark matter and "ordinary" visible matter are affected differently by the collision. This leading to the separations of detectable gravitational lensing we are currently observing. Exactly why this is the case is yet to be determined, thus the name dark matter prevails, as an unknown place holder. It does seem that aside from interacting only gravitationally, dark matter may also have dissimilar inertial characteristics, when compared to the visible ordinary matter we are familiar with. Once again suggesting the potential for differing dynamics in the case of dramatic dynamic collision events. __________________________ The rest of your ideas, seem to move off to the extremes of any rational application of what little we know, with certainty, about space, gravitation, dark matter and perhaps reality in general.