Deepslate ores

In the latest snapshot we were introduced to copper, coal, and emerald deepslate blocks. they are, as of now impossible to get in a survival setting. This is somewhat frustrating for survival builders. Perhaps an expensive crafting recipe could be used? 3 emeralds/ 8 coal/ 3 copper along with a deepslate block for crafting. This would be simple to implement and would make the game a bit more survival building friendly!