ABS + Copper and ABS + Iron filament production

Does the increased thermal conductivity smooth the temperature gradiants that cause warping?

I wonder if vapor-smoothing metal-filled ABS would shorten the process of making the prints look like metal.  And with all of the metal filled filaments out there, why has no one offered ABS?  I'm guessing they avoid it because ABS is less popular due to warping, but if it turns out that the filling reduces warping, and makes finishing easier, it might be worth it to someone to pursue making it commercially.