Zoomlights are known to be rather inefficient in terms of effective output. The fresnel lens however is a good decision to reduce its weight.
Like Odepro's KL41 (https://www.amazon.com/Odepro-Hunting-Flashlight-Rechargeable-Battery/dp/B0756DP9QB) there might be a good chance to offer the same T28 design with a different head section. If you used a single emitter TIR lens or a SMO reflector you could offer a nice versatile, multicolor tactical flashlight with a smaller head.