I don't think it would take anything that complicated because the G3M texture maps are normal, they look just like anybody else's. It's just a matter of creating a scheme for what goes where, like any texture conversion. Probably just leave the G3M figure out of it and work from the UV templates that come with him. I converted the M4 seam guides to him (to get some use out of the M4 to G3M add-on that I bought) and I'm using that to tell me what matches with what. It just seems like a waste to not do it in a way that is repeatable or can be automated, since any given conversion will always require the same steps. It has occurred to me that a texture converter could be written as a script for Paint Shop Pro (the image editor I use). You would just tell it to do all the things that you did to convert the texture, and have it do it on its own. But I don't know how to program so I can't be the one to write that.