(Nether Biome) Wither Dunes

This is an idea for a new biome in the Nether. This biome would generate similarly to the Nether Wastes and the Soulsand Valley, it would have a grey fog to resemble the wither atmosphere. The blocks and resources in this biome would include Withered Nylium, stems and fungi for the ground, withered fossils, withered wart trees that would include withered roots and withered wart (like in the Crimson and Warped forests, but withered), this would also come with new withered wood materials as well, the trees don’t spawn at the same rate as in the Crimson/Warped forests, you would find a small group of them in certain areas of the biome so the biome can be a little more open. Stepping on some of the vegetation like the fungi will give you the wither effect. The biome will have Wither skeletons as a natural spawning mob along with a few new mobs possibly. The biome will also have obsidian as a natural spawning rock, it will spawn in a cluster like a giant boulder around the lower levels of the biome. Seeing that a lot of the natural spawning blocks from the Nether have been taken and made into new biomes, it would be nice to see the same out of Wither.