Copper Nuggets and Enhanced Redstone.

Copper ingots can be turned into 9 copper nuggets, that's it for the copper.

Copper nuggets can be mixed with Redstone to upgrade the components. All Redstone will glow green when enhanced. Hoppers work quicker. Dispensers and droppers fire faster and further. Pistons can now push 24 blocks instead of 12. Even regular Redstone dust can now emit powers of up to 30. Repeaters and Comparators will need to be upgraded to, otherwise they will only emit 15 power into Copper Redstone, which can store 30. Also, putting 16 or more power into regular redstone will burn it out, it just won't work, like a Redstone Torch. You can make these in a crafting table, the more redstone, the more copper nuggets, e.g redstone dust is 1, repeaters are 3. Redstone blocks will need to be upgraded by a copper ingot, because you can't fit 10 items in a crafting table. I wonder what Observers will do?