re: If these stars were USA soccer stars

Goalie is the place where I have little doubt you could take an elite athlete from another sport, train them for a few years at goalie, and turn them into world class.

The reality is that being a goalie is a very different skill set than any other position in soccer...namely, you can use your hands (which most, especially basketball) sports require advanced hand-eye coordination.

Assuming that elite athletes can play any other position well is a shot in the dark.