Since the ellipse irregularity increases along with f1f2, the way to make the light rotate in a perfect circle is... correct, moving the second focus, f2, into the same spot as f1, which means changing the SpotlightMovementRadius to zero. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.