With defence so structured there is a greater reward than ever for chancing your arm.
Players are dumb, really dumb. From very early ages their ability to make decisions is reigned in by overzealous coaches. Through destabilising the defensive line - such as what CSmith does at every ruck or what the Doggies under Des have begun - defenders lose the familiar comfort of 'structure' and are forced to make decisions under pressure - something they rarely, if ever practice.
If you don't practice it, you're not going to be any good at it. Counter-intuitively, through controlling every aspect of the game coaches are actually developing poorer players. We now have some of the worst decision making first graders the game has seen, IMO if it were not for the size disparity, teams circa and before the early 90's would absolutely destroy most of today's teams.
Sometimes the best coaches actually do the least - letting kids just play their own games from those early ages can be the best form of training.
Believe it or not the Storm are actually one of the most unstructured teams around the middle of the field. Much of their training involves off-the-cuff play through the middle third, fostering an environment whereby players must practice making decisions in both attack and defence. This is why Smithy and the Storm are so good through the middle.
