One thing I would really love to see in Andúril is the ability to explicitly set stepped levels. Rather than trying to work out what high and low steps would place the fully related level bang in the middle, it would be awesome to be able to define “step 1: level 25, step 2: level 50, step 3: level 100”. That way, you can set it up to have levels at precisely the output or estimated runtime that you require (assuming a table of rough outputs per level is available like with the Emisar D4). Maybe a way to define output by lumens would be better, but I don’t know how this would work considering each flashlight has a different output at a given ramp level.
I see a fair few people say the current candle mode is a bit too flickery, and I think I agree. That’s a minor thing though.
Lastly, I love the tint ramping on my LT1, but the shortcut isn’t as convenient as the brightness ramp. Not sure if this can realistically be improved much, but it’s worth considering that we might start seeing tint ramping as a staple feature of enthusiast lights within the next year or two now that the option is available within the firmware.