As an indicator at night, low work quite well for me. With the latest firmware it is possible to use the aux LEDs to blink out numbers (like battery voltage). It is also possible to use the aux LEDs as a separate channel in all modes. With these features the high aux brightness isn't that bad anymore.
Awesome job! You should be hired by flashlight manufacturers as a freelancer, although I think these drivers could become very expensive and once the manufacturers start substituting components it's efficiency could decrease.
Yeah, they are inductors used for switching converters (and the one on the left is a real monster!). @thefreeman@lemmy.world is known for high efficiency drivers, so I wouldn't expect anything less.
Uhm... There are so many other flashlights with aux LEDs. Sofirn, Wurkkos, Fireflies, Mateminco, just as an example.