If the fear is about someone sailing with a kid to cut down weight, why not inserting a minium age (ex. 16 years old) instead of minimum weight for the regattas mentioned in the ballot? If the international Tornado class does not want to discriminate Asian sailors, they have to live with the fact that people from these countries in average are smaller and lighter than those of the established western countries. And yes, those will enjoy a weight advantage in light air events like Qingdao will be. The London olympics will favour a different type of sailor for sure. Anyhow I think ISAF is highly aware and concerned to offer equal chances for the different nations and would probably not imply a rule discriminating certain countries purely based on their physics.