Material recycling has been brought up a few times in other threads -- we can already melt down metals, but it'd be neat to be able to, say, take a wooden table and cut a wooden ring from it.
I was thinking that, when something else occurred to me: The game should be able to track what things a material has been used for in the past. Obviously, this would require a more advanced system of material-recycling handling (even for melting things), but I figure it's worth bringing up now for consideration when/if that happens for other reasons.
This way, if an object becomes legendary, and is then broken down and made into other objects, those objects can state that they were once part of the original, and it could potentially (in some cases) be tracked in the Legends screen.
For instance (to use a sort-of real-world example) a piece of the true cross that is made into a wooden ring ought to be recognized as such. Similarly, if I melt down the legendary sword of a demon general, and make it into a crown that I gift to my king, that crown should indicate its origin when examined, and (if it is legendary itself) on its legend screen, and its value might be increased because of the significance of the metal it was crafted from.
Finally, when magic is in these could sometimes result in magical properties being conveyed -- the ring made from the true cross, say, would probably have magical powers. That crown might have powers itself, or at least potential magical connections that a magical entity could exploit. My king might become corrupted from wearing it...