I personally don't think anyone has the right to offer permission, when they do not own the brand.
we have been living in the grey area of property rights, and I personally don't believe that we in the 501st have the right to
produce and sell items with legal permission.
LFL / Disney seems to consider the 501st in a very special way, in effect considering it advertising in trade for our breech of Intellectual Property rights. I don't believe that we have the right to offer permission to recast, when we do not own the brand.
Recasting is the action of making a replica without the brand owner's license.
As an example, MG never had ownership of the ROTJ modified TK. So CAP and CAP-W do not have copyright protections, or any rights as they never received permission from the owner of the IP.
We're lucky, that's all.
Making a 3d model of a part, from a sculpt, that replicates an item replicating a licensed product, would require a license from the property owner. Many companies have paid money for said license, and that's the only way to make it legal. Again, we're lucky up to this point.
Usually recasting is only considered when a person makes a replica of a non licensed product, and sells the derived work as a product for sale. When expanded into legal concepts, we're all recasting, when we sell products.