Copper Tier for Certain Equipment

There are multiple weapons and tools without tiers, and I think they should get a new one: copper. Upgrade a bow, crossbow, fishing rod, carrot/fungus on a stick, or shield in a smithing table to a Copper [item], which I imagine just has increased durability. Regarding banner shields, I think you should design the shield first then upgrade it to copper, not design a Copper Shield. The community has been begging for copper in equipment, and I think it would fit nicely as this exclusive tier, especially for items that tend to remain the roughly the same from early to late game. Additionally, smithing tables are accessible early game, but serve no purpose until late game.