Dead Bones

i think wither skeletons should drop decayed bones wich are then able to be crafted into decayed bonemeal. they should be able to grow netherwart, dead bushes and wither roses. (maybe when wither roses are placed on soul soil and  bonemealed it should grow more like overworld flowers.

i have been trying to make a base out of red nether brick (which needs nether wart to make) and it takes so long to grow.

it could also grow nether trees and warped vines.