All the news about Caster Semenya has got me thinking. In sports, the use of chemical alterations to players is banned for just about every sport. It's seen as unfair to boost yourself chemically when other people get their prowess by difficult and demanding training. In short, drugs or hormonal treatments are cheating, k'thanks-for-playing.
I'm thinking, what if there was another league, where 'doping' was permitted? The records would probably be higher, but would it be interesting to watch? What is the true limit of human athletic performance? The 'Doping' league would consists of teams that were permitted to use such substances, which would be banned from the existing leagues, which by retronym are now the 'natural' leagues.
The league would also do medical research on the forensics of doping, so as to enable to natural leagues to better detect it.
The only objection I can think of is ethical. Steroid use does have a negative effect on the athlete's health. While athletes who dope do so of their own free will, I can definitely understand the position of needing to protect them from their own selves -- that victory is not worth ruining one's health. I shall read up on medical ethics.