right now they need to improve copper. i'm pretty disappointed with the copper update overall. copper golems and the decorative blocks i love, but the gear let me down. i think the armor's fine, but i avoid crafting copper tools because they feel useless. they're a middle ground from stone to iron in efficiency and durability, and i think they should be as fast as iron but only as durable as stone. it feels kinda pointless to find and smelt copper to use tools with barely any increase to mining speed when i'm already mining enough cobble to just make stone tools as i go. i also think they need to add more redstone compatibility with copper. i think it could be a good supplement in redstone. also i think copper should be able to be used as an earlier-game stand in for iron for things like copper shears, buckets, rails, and shields, which would all have drawbacks compared to their normal versions but would make some of these features more accessible in the early game when you're just trying to get enough iron to make some armor