James,
it seems you are the opposite end of of the spectrum (relative to Pakewi).
You talk about athlete’s selection, which is more important if we talk outside team sports. If you have the opportunity of watching Barcelona (soccer), you will immediately notice how your opinions about selections are biased toward single sports. That kind of sport-specific quality is not clear up to your late teenage years.
You say "The sport structure/organism requirements must come first, then the athlete/human and their peculiarities and needs. ". What is the difference between organism and human? I suspect you are talking about the same thing and so your subdivision is forced.