+1
I’d put forward the Big Head side switch aka Courui 1600 for a candidate that would benefit hugely form a custom designed copper pill.
I suspect this light will become fairly popular with the modders here and has great potential for some serious output, but the stock pill/emitter shelf really sucks! 
I was thinking of contacting VOB and some other guys who have done custom copper pill runs in the past to see if someone would be up for designing and manufacturing a replacement heatsink/pill for the light.
Frankly I think it would a lot simpler to machine than a HD2010 pill as well, I envisage basically a two stage copper slug with wire holes and a threaded section that mates with the thread in the light body. No need to mount a driver or worry about extra steps to fit a battery tube either. Would require some R&D work though since it’s not a direct copy of an existing pill in a different material.
The light is very new so not too many people have one, but I suspect the vast majority of those who do have one/are getting one on this forum would be interested in a copper pill upgrade for it. I certainly would be down for at least one if not more. 