Ah, the things that bigger think tanks can do. The Mercatus Centre at George Mason University runs long-term projects on regulatory quality. Here's Mercatus Senior Research Fellow Jerry Ellig's testimony at the Senate Committee on the Budget:
Mercatus has, since 2008, produced an online report card scoring the quality of regulatory analyses and whether they meet the requirements set out by the Office of Management and Budget and the Executive Order. Performance has been terrible, but regulations reviewed by OIRA have fared better.
I wonder how NZ's Regulatory Impact Statements would score.