Oh, boy. It doesn't matter you have no exclusive evidence of one of the primary claims of your model?
Well, then you most concede that both a geocentric and heliocentric model are equally valid from a kinematic and dynamic perspective.
"Okay practical purposes, useless for anything else" means that it doesn't work. It's invalid, so you have to come up with another theory in order to explain everything else. And when that fails, you have to come up with yet another theory on top of that.
Dark matter/energy are ways to explain the fact that relativity can't account for that fact that the predictions are off by 99%. That's why a growing number of physicists are distancing themselves from this ridiculous theory. Complete garbage. LOL
Geocentrism doesn't have that problem because aether is a real thing, once again making it a more valid model. You'll never find a unifying theory without aether, that is a fact. Go read Frank Wilczek's book "The Lightness of Being" for more details about the unifying forces.
These theories of gravity, relativity, dark matter all exist because these people cannot admit that the aether exists, so they constructed a bunch of pesudoscientific explanations in order to keep a lie going. These theories are a dead end because they are nonsense.