Some Cave and Cliffs ideas

Ok, so I got a few ideas for the new update. First off is moss, that can hang from ceilings or grow on the ground. It can also appear above ground neat trees in forests. Next is packed dirt that spawns replacing dirt that may appear in caves. This dirt can also be crafted with 4 dirt in a crafting table. Next is sediment, that generates in the water of caves, it breaks easily but needs silk touch to actually be broken.