One of the things Blackstone's Schwarzman calls for is principles based regulation. Rather than issue a whole set of new regulations every time things change in financial markets make regulation comprehensive so that no one is excluded not hedge funds like they are today, and all global financial players would have to be regulated under some unifying principle, and make regulation under a unified authority. But also have a set of guiding principles for regulating authority which it will follow. If this was done a lot of the damage that ocurred from extensive leveraging by investment banks could have been avoided, as investment banks would have been required to follow prudent financial practices to limit leveraging. And in other areas like mortgages prudent and safe financial practices would have been required.