I don't buy the "we need a dimmer light" argument. Most all lights have a beam spread. A flashlight has a beam spread of pretty close to 35 degrees and, especially for LED, the emitter isn't in the best location for the reflector...it's usually behind the focal point. Using a 35 degree cone and a 600 foot length, the cone at that distance is 116 feet in diameter. The light may have a hot spot but, for the most part, the beam is spread out over 107,000 square feet or 1200 sq yards. At 200 yards, there's hardly enough light density with a 500 lumen light to even notice the light much less be blinded by it. The lux (lumens/area) is 0.41 lumens/sq yard. Even if you boosted the light output to 2000 lumens, you'd still have only 1.67 lux. 0.41 lux is comparable to a full moon. The high output light would be comparable to a full moon at the equator. Hardly 'blinding'.

I don't know about you but my lights aren't aimed 200 yards down the road. Even my car lights aren't aimed that far down the road...not even on high beam. I don't go fast enough nor is the light output of a bicycle light enough to justify that kind of aiming. Generally speaking, my lights are aimed around 2 to 3 car lengths (roughly 30 feet) ahead of me which is far enough for me to see obstacles at normal riding speed. I'd rather have a lot of light aimed down at the ground where it's useful than a little light aimed very far down the road where it's wasted.