ToyKeeper, I like your plans to improve/upgrade Andúril.
Here are some of my thoughts:
Thermal configuration
Accessing pre-selectable, user-defined step down temperatures would make it easier to toggle between a safe, conservative and a high performance setting. At least two temperature thresholds to choose of and that the user can define by the known click series would be fantastic. It would enable the user to operate the light with all features but also with the option to easily switch between something like 45°C and 65°C as the stepdown threshold. As an alternative you could also wipe the entire thermal configuration click series and only offer selectable, fixed thresholds to choose like 40°C, 45°C, 50°C, 55°C, ... up to something like 'no stepdown at all' or maybe 80°C.
I also agree that aggressive throttling on repeated Turbo runs might be a good idea. But it should go in line with user-defined step down temperatures, i.e. with safe settings in place it should not step down as aggressively.
IntelliBeam® feature
I like the idea that Surefire pursued with their IntelliBeam® feature ("IntelliBeam® automatically and seamlessly adjusts output to the optimal setting"), i.e. the driver will immediately step down when placing something in front of the flashlight, like a hand or if you put it onto a table. This will add some extra safety to new flashlights but it will require some hardware add ons in new flashlights. With the aid of a sensor (black rod) in the reflector the back-reflected light is measured. If it exceeds a certain value the driver automatically reduces the light intensity in a fraction of a second. Maybe it's worth to have something similar in more flashlights other than Surefire.
Submenu for manufacturer custom modes
With many new flashlights coming, maybe it's worth to leave some room for a submenu that each manufacturer can fill with their own customizations, e.g. for operating multi-emitter lights with different LEDs, colors etc.. I have lots of ideas on my mind like an auxiliary red LED in addition to white light that the user can operate separately.
Concerning new names for this firmware...
Well, if we stick to the Tolkien universe it might become difficult to find another sword that is as glorious as Narsil or its successor Andúril. ;-)
With that said, maybe we can name this one Galadriel (a.k.a. the Lady of Light). Galad is a derived word for "light" in Sindarin (one of the most important languages in Middle-Earth). Galadriel was one of the greatest of the Elves in Middle-Earth, surpassing nearly all others in beauty, knowledge, and power.