There are many things to like about the light:
Looks great and not too bulky grip. No sharp edges, good threads, lubed threads, titanium bezel, thick lens, tripod mount, beefy driver circuit holder that can be unscrewed, no super thin wires, easy to resistor mod, large and secured mcpcb with thermal paste, good heat transfer to body, full reflectors adds more throw, the reflector size is also maximized to their full potential. Reflector is nicely built, GIT O-ring, no PWM whine, etc...
User interface is the largest downside. These simple changes would have made the light MUCH better IMO.
-Shut off from all modes by holding button for about 0,75 sec (not 3 full seconds)
-Hidden stobe and sos (Maybe 3 quick presses would be a nice way to go into the blinky modes group?)
-Higher high 2,8A stock would be nice (but just as easy to resistor mod), lower medium (25%), lower low (2%).
-PWM frequency could be higher.
-Fix SOS
Some nitpicking on the exterior that could be improved:
-Remove Chinese signs and numbers below button.
-Less glossy and tougher anodizing.
-More recessed switch, currently its flush. Would be better if it was slightly recessed (1mm or so)
-Not sure if I like the tail, would prefer it flat and shorter. That would remove the lanyard hole. Maybe add a detachable lanyard ring that could be properly mounted with a screw. One that did not make the grip uncomfortable.
Other:
- Not sure how the tail is secured, but I was not able to get it off with my hands (have not tried much much though). Everything should be easy to unscrew.
- Update emitters. (XM-L2 T6 4C should reach a broad audience.)