The Preconditions for All This To Work

I should probably elaborate a bit on what would mean these ideas work, and would would mean they don't.

If forces alternate between attractive and repulsive for a given particle type (over distance), the ideas work.

If there is an attractive force which fades out over distance, then another attractive force, without an intermediate repulsive force, they don't.  Likewise, a repulsive force followed by another repulsive force rules all this out.

That's the "big" one.

If electrical forces between particles persist at gravitational scales - if protons continue to be electrically repulsive at distances we can observe gravity at - these ideas don't work, at least without serious modification.  A major assumption here is that the apparently electrical repulsion between protons is, in fact, just a repulsive phase of gravity, which I expect to end somewhere between 10^4 and 10^6 meters.  Magnetism is fine, electrical forces still dominating gravitational forces isn't.

Non-ferrous, non-molecular objects shouldn't exist below a certain margin of size.  It they do, that either requires explanation, or rules all this out.  Specifically, we definitely should not observe objects which require gravity to hold them together, at scales gravity is supposed to be repulsive at in this model.  Likewise, we shouldn't see non-paramagnetic materials adhering to small bodies in a vacuum, generally speaking, although specific cases may be expected.

Attractive forces should generally be observed to be both stronger, and occupy smaller scales, than repulsive forces, particularly but not exclusively in composite particles.

Stars above a certain size should start to exhibit paradoxical gravitational behavior; in particular, a star close to collapsing into a singularity should have nearly no gravitational effect on neighboring objects.

Black holes, therefore, should have apparently more mass, from orbital velocities, than the stars that formed them.