Depending on the complexity of the given UV it may not be as bad as that. In Blender at least you can unwrap onto a .jpg background of the desired template or texture and adjust using proportional edit to more or less match it. Now, matching up exact seam areas, that was what killed it for me.
That’s part of what I was talking about…totally insane when it comes to matching.
But the real killer would be building an item in such a way and to have ironclad proof that the original obj was not used in any way. Sure, I can take and shrinkwrap an item and probably reuse the UV, and even do it in a way that none of the faces actually match, point for point, the original. Then I could build it by hand, even different, but what’s to say, at the end of the day that both items weren’t somehow ‘cloned’ from the original.
It’s not that it can’t be done…it’s that the work and proof involved is way more than any benefit of doing it.
Yeah, this wouldn’t fly as something to do for a redistributable item, but it would be easier to cut and paste the texture map to fit a new item than it would be making new geometry for an existing texture.