Oooh, I’d love to test this puppy… 
I pointed out to Tracy the pause-at-30% like the SP32A has that a few folks grexed about. True dat…
Not sure about the spex. Is it 2S2P as in “4.2V-8.4V”? The contact ring of the Q8 would be fine as long as using button-tops, but you’d need to fix the tube relative to the head just like in the TK4A/SF11 with 2 prongs or a similar keyed mechanism. I’m fine with the Q8 way, as I just got more BTs.
I need-need-need something warmer. I’m getting tired of 5500K and cooler. Throw some 4Cs/4300Ks in there, or some 4500K Nichias. Make a WW option, too. 3000K at night is wooooonderful.
Killer idea? TIRs!!! If you’re machining a solid chunk of aluminum for a reflector, you can just as easily, maybe more so, drill some simple cylindrical wells for some nice 20mm TIRs. Or with a wide enough head, use 26mm TIRs instead of the usual 20mm TIRs. No more fried-egg beams!
With TIRs, you can swap them in/out to your heart’s content! Want a wider flood? Throw some 60°s or 90°s in there. Want a narrower beam for better throw? 10° or even 5° should work wonderfully.
Dunno if any other mfr has done this before, so Sofirn could be the first!
But definitely, warmer colors. 4500K is low-stress on the eyes, and TIRs mixing the colors and all but eliminating tint-shift would really make that shine (haha).