More Copper uses

We have variants of the doors, but they are all unique on design except the iron door. The iron door can only be opened with redstone but you can see through it, what if we had a copper door, the copper door works like a normal iron door. (Maybe it can age like copper blocks.) But the copper door is solid, so you can't see through it unlike the iron door with its holes. This adds a new door that is like the iron door but is seperate with the idea you can't see through it giving this item a use. Same can go for copper trapdoors.