The topic pops up from time to time.
Some quick examples:
I remember seeing many more suggestions for very different kinds of headlamps, I guess most didn’t have their own threads.
I believe that none really started because there was nobody dedicated enough to drive them.
Now I see that Lume drivers are a real thing. They have top efficiency which is the requirement if one wants to compete with the major brands. Before, BLF lights could get top scores on peak performance or UI or nerdy features (like candle mode). Or overall quality with moderate pricing. Now we can compete on runtime and sustained performance as well, though the price gap will diminish.
Also, there is an interesting new emitter that requires a 6V driver. Nicha NV4WB35AM.
Quad E21A headlamps from Tamagochi and Clemence consistently got top praises for their beam quality. E21A is just that but with the dies closer together, it’s easier to shape the beam.
This makes me think that maybe this is the right time to actually try?