I'm completely with Archimedes on this- shifting talk away from copies or clones. There are several ways to update these if you must, from new screw in LE assemblies available from various builders here, to complete triple conversions. As far as finish, I'm sure you could get one coated to change appearance. I love that a light that's 8 1/2 years out from it's introduction brings this discussion. I find this discussion akin to "Let's give the Mona Lisa a haircut, and have you seen that blouse she's wearing? She needs to get with the times!!!
Admittedly, my Haiku runs a more modern light engine than it came with, but more for color temp than lumens. And it's seen a hard life... I think if Don were to chime in, he would have definite opinoins on the direction current design, engineering, and outputs have taken.
Ozy- An output bump? See: Datiled or Tana for a custom rolled light engine. And don't worry about that heat- 16340's only have so much to give, and they are both aware of the design limitations. One can always use Don's "Rule of Thumb"- If it's not too hot for your thumb, the light's just fine...