Even though I got a dog with the Yezl raptor, I keep hoping that a really good XML FTT will come around. I’m not going for this one though.
I think it is a concept that is bound to fail. We all know how bright an XML is and can’t help but be disappointed when we see the XML with all the optical restrictions this design brings.
When someone manufactures an XML recoil, I will again be willing to be the guinea pig.
Like Langcjl said, an xm-l zoomie is a lesson in disappiontment if you're expecting any sort of throw. I noticed this during a previous mod with an Edi-T T11.
I think it would work with a much larger lens well above 50mm. I just tried it with an XM-L hoist (C8) without the head and a 66mm aspheric lens. This combo throws an image of the die about the same size like the Edi-T T11. Match, start up your lathe. We need a ~70mm zooming head assembly for C8. You know, size matters.