Farmable Sand (Sandstorms and purifying Soul Sand)

We have been getting a lot of things that are becoming farmable lately, next thing we should set up is making a sand farm with two methods, Sandstorms, desert can finally have weather in the game, sandstorms can be rough but can also do a thing like snow does in cauldrons, it can add something like quicksand in the cauldron some how which will be a new block also. Same as powder snow to skeletons, you can use quick sand to turn zombies into husk. Another method is to extract soul out of soul sand somehow.