Ben does a character study of Lex Luthor, and something occurred to me: this could be what is needed to save the Superman franchise. When they do the next reboot, tell the story from Luthor's point of view. The problem with Superman is that he's basically God. He has no character arc. He is simply a force of nature.
So make that the problem rather than the solution. Superman is an unstoppable force for good who makes humanity weaker. Luthor just wants to save the human race from itself (all while making a killing on real estate).
Food for thought,