I am afraid this is unlikely to materialise since Lummi products are all about reliability through minimalist design. Besides, the lithium cell chemistry combined with resistored direct-drive has been described as 'semi regulated' in reviews since the discharge curve is so pleasing.
Asking for regulation on these lights would be like asking Ariel Motors to fit electronic stability control to the Atom. They would laugh, hit you with some tubular steel and then set fire to you with a TIG welder.