Regarding injuries, I think there are a few things that could be done to somewhat mitigate overuse injuries. Things such watering down jump content whenever possible or taking part in fewer competitions. Even taking an entire year off might be a good idea if the goal is to make it to Beijing. In his JP Facebook FC Nathan's mom was quoted as saying that they don't like to plan too far ahead because they know that injuries are a part of the sport.

(and to Donovan, who goes to the 4 continents), let's hope for a memorable Olympics 
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but yes, any publicity to promote him in South Korea is good to see.