The ability to take a crafted item, like a piece of armor, and break it down in to the materials used to make it so that those resources may be allocated elsewhere. I saw that "Reverse Engineering" was mentioned here, but reverse engineering isn't so much about taking apart an item for it's raw materials so much as it is opening it up to see how it works...
I agree with this, it will be mostly useful for rather a) upgrading, b) undoing crafting mistakes, or c)getting useful materials from already found materials.
I support such idea. Also depends heavily as how the crafting and maybe upgrade systems will work but sounds all good to me