What's the intention here? I don't understand what this is for?
You can't displace the sphere with a mesh displacer, and you can't force displacement either as it explodes into almost a particle like effect, with high sides, or seams don't align with low (and shadow remains like a circle despite mesh a completely different shape, some times the shadow starting before the object).
I can't really think of a use beyond spheres or light spheres.