There is no perfect system. Every one of those allies, if you were to ask them, would offer you lessons learned from their own experiences.
I think the two examples that you provided in your opening question are very good places to start. As we look at Australia specifically, this is a country that has fundamentally revolutionized the way they do business over the last 20 years or so. They still have major challenges, and they would be the first to admit it. Not every one of their programs is perfect. But I think that is a really good place to look for some best practices.