Farmable deepslate and blackstone

Deepslate and blackstone takes a major part in many builds, however they are harder to mine and can't get intanst mined or farmed like stone, making them painful to get. I came with an idea for a way that boht of them can be farmable.

Deepslate: Every stone under y -50 will turn into its deepslate variant instantly,  allowing deepslates generators (you can break those deeplslates with a TNT dropper contraption).

The transformation will also leave partials so players won't get confused

Blackstone: Simple as that, 8 cobblestones and 1 black dye in a crafting table will make 8 blackstones. (both of the ingredients are farmable)