I liked the story, though it's a bit sad that Clark doesn't have powers. Still, it got me thinkng....
Assuming there is a Lex Luthor in this world, he might be after Clark because if he could find the key to "powerlessness" then he might be able to inflict it on the crimefighting agents of his choice.
Intergang might be after Clark for the same reason, but they would target whole cities that refuse to fall under their dominion.
Also, every time a manned spaceship is launched the occupants receive massive doses of solar energy and become dangerously overpowered. The government and S.T.A.R. labs want to study Clark to develop a way to moderate powers to enable space travel.
