Whether we like it or not, money rules sports. Professional teams overseas leave no stone unturned ( read spend copious amounts of money) in an effort to get an edge. Some of these innovations will work some won't. AFL coaching staff don't visit 3rd division soccer teams in Greece to get an edge - they visit professional gridiron, baseball, English soccer teams that spend squillions on improving what they do. Hence the reason we go and visit them.
The thing overseas coaches could learn from our game is how we produce world class athletes on a shoestring budget.