I'm wondering, what if we allow an Aether, but consider gravity, and graveto-magnetism to change the properties of the Aether, making it more or less stiff as a medium. I mean, what if light actually travels faster/slower when the Aether is under different kinds of stress?
Maybe near a gravitational body, the Aether is under different amounts of stress along different directions of motion, so light might actually travel faster in one direction than another? Maybe near the surface of the Earth, the Aether is affected not only by gravity itself, but by a kind of graveto magnetism associated with the motion of the matter near it as well?
So, instead of explaining Michelson-Morley by talking about dragging the Aether, we could try to build a model that involves different stresses on the Aether, which result in light behaving in a way consistent with the results. (Then afterwards, we'd need to test it against something else before it is seen as credible, of course.)