I was thinking a biome that I wish they could possibly add in the nether:
-Tunnels and cave systems that can be found at the lowest part of the nether.
-Wither Skeletons ocassionally spawns in this area
-Wither dust particles falls from the ceiling
- Withered flora and fauna makes this place more immersive
- Has a dark gray fog that will make this place “More withered”
This makes mining for ancient debris more interesting and exciting
Witherstone - a withered version of stone
Wither Puffs - a strange flora similar to the size of the sea pickle that is edible yet withered. To remove the wither status, throw it in soul fire and allow it to cook. When eaten, this will give you a buff known as the soulful effect, which allows the player to sprint much faster with the bonus of the player emitting light and damage hostile mobs on its way in 15 seconds.
Ancient Debris - these ores can also generate rarely in this treacherous biome.
Clinging Grass - gray grasses that grows from either the ceiling, floor or both sides of the tunnels.
Wither Skeleton - inhabitants of this withered depths. They'll have a chance to drop a wither bone which can be used to craft withered bone meal, that when used in a sapling, it will turn into a withered tree.