I imagine the magic system will be expanded upon which means refined Eitr will likely be needed for future weapons and armor. I also think it's possible that the next weapon and armor sets will use black metal and finally get away from needing iron for so much. so hording a bit of the green black stuff might be a good idea too. honestly tho, it's gonna be at least a year before it even becomes an issue so we probably shouldn't worry about it now.