I'm not usually a fan of extra laws, but the German law about headlight cutoffs has led to the production of some really excellent products and the U.S. lack of such a law has led to a whole lot of really bright headlights with terrible optics. I know I could just buy the German lights, but I'd like for there to be a more competitive market of inexpensive LED lights with good optics.
We've reached the point where $50 will get you a brighter light than you need for anything short of midnight trail bombing. I can only hope that beam characteristics will be the next market differentiator.