I've always said that, if George REALLY needed an objective measurement of force sensitivity, and if he REALLY needed it to be midichlorians, it would have been much more palatable to me if, instead of them being basically the middleman that connects a person to the force, that they were simply little parasites that were attracted to people with force sensitivity. And the stronger with the force, the more midichlorians would be drawn to them. It would still be fairly stupid, but at least it wouldn't be as damaging to the force as what we ended up with.