New block to replace Copper blocks in Trial Chambers

I like how we can get free Copper blocks ready to use in the Trial Chambers, but if in the future the Copper has more recipes, items or other uses, with all the free Copper in the Trial Chambers they can become too cheap. This is my solution: Add a new Copper block, similar to the normal Copper block, like Polished Copper block? Something like that. This new block can't be used to craft the classic 9 Copper ingots but can be used to craft the other decorative Copper Blocks in crafting table or the stone cutter, making it possible for us to obtain tons of decorative blocks with this structure without replacing Copper mining or value.

Thanks for reading! I hope this idea could added in the game! :D