> Ban players for PEDs .... Suspensions are not enough, because even if a player stops doing them, he may have made himself unnaturally big, strong and fast.

This is really insightful. I don't know much about HGH but I know steroid use is something that a guy can do for a while, gain muscle and size, and stop, and yes, some of that size will go away, but there's a base that will never go away. That's a fact a lot of folks don't know, that steroids have permanent effects. The sport may catch a guy cycling and suspend him for a few games or a season, but it doesn't matter. He's already gotten growth that he can then build on without PEDs, and gotten an advantage over guys who never use steroids.