I'm no genius, and I'm obviously not an international level soccer player. But I think it is largely a coin flip. Every player in the world cup can place the ball in the net wherever they want to. Sometimes the goalies guesses correctly, and the perfect shot still eludes him/her. But mostly, as I see it, the goalie simply flips a coin and goes one or the other direction and hopes that the shooter chose the same direction. Is that not true? Maybe I am misunderstanding what I am seeing.
I would prefer a longer run-up, in which the shooter comes from farther away and has the extra duty/obligation of creating his/her his own shot. It seems more of an even battle than when the shooter is just blasting it at the goal from a few feet away.
Soccer is a beautiful sport. I never appreciated it until I attended higher level games in my twenties, and saw the entire field at once. There are so many different pieces in motion. In a telecast, that can't be seen, and it falsely appears like only one player at a time is doing anything. Got to see it live to appreciate it, in my opinion...