Change up Deepslate textures

A lot of people have requested for Deepslate's smooth top texture to be used on all sides of the block, and I personally agree. Although, I understand why the devs may want the texture to stay as it is. I'd say a nice compromise would be to, perhaps, make it so you can smelt Deepslate into "Smooth Deepslate", a version of the block with the top texture on all sides. In addition, I feel that Cobbled Deepslate's texture is too similar to the regular Deepslate, and I feel that that could be fixed by perhaps giving Cobbled Deepslate a rougher texture, just to make it more unique.