I noted that the energy consumption for an inflatable cylinder is much higher (because of the wind which hollows the balloon and slows it down in its rotation?) than that of rigid cylinders like those of Anemoi or others for ships. As a result for an AWE use, the spin ratio is more limited, just like the lift coefficient which increases when the spin ratio increases. And Tensairity ™ use increases the stiffness of the balloon, but not much the internal pressure: so we can guess that the energy consumption would remain high.
This gigantic Magnus balloon with externally motorized belts could perhaps consume less energy by being stiffer due to higher internal pressure by using shapewave® or drop-stitch style technologies for the beam used as a rotational cylinder. Thus a higher spin ratio could perhaps be achieved by consuming less energy.