wow, that was a lot to read and really confusing to lol i didnt even get halfway before i gave up but i think as long as the plane it moving foward it should take off. if the treadmill can move and not pull the plane with it = 0 resisance or friction between the wheels and the treadmill and inside the wheels or wheel bearing so the treadmill can spin and the plane stay still so that 100% of the force of the engines goes towards pushing the plane then it should take off without any problem. damn good question though! really got me thinking