My Take on Wither Skeleton Bones

I'll keep this short and simple, as I'm certain others have requested a similar addition. I only wish to provide a new perspective and lay down some of my own ideas.

Firstly, Wither Skeletons would drop their own unique bones, called "Withered Bones" or "Wither Bones". This could then be turned into "Bone Meal" or, as I was thinking, "Bone Ash". Which could then be turned into "Ash Blocks", a gravity-affected block not dissimilar to sand, with a texture closer to moss or course dirt.

"Bone Ash" could be applied to grass to create dead grass / dead bushes, turn flowers into wither roses / withered variants of the other plants and to "ungrow" crops, or just kill them entirely.

The idea I'd be most interested in, however, is using this "Bone Ash" on any sapling to create an "Ash Tree", which would be a tree either without leaves, or with visually dead looking trees. This would provide the player with "Ash Wood", a new Black / Dark Grey wood set to expand the palette of woods.

Last little side-note, these bones could also be used to craft wither potions! Just a thought.