Sky dimension, super secret dreams

The sky dimension should have biomes relating to types of weather, biome with snowlike clouds adding a bounce mechanism for the elytra and sprint parkour. Bottles of clouds to slow fall for a few blocks, there should be negative mountains with planes biomes on top and lush hanging forests, storm islands where skeletons spawn on their horses. And mainly, Greek And Roman based villages and pillages. The other thing is adding the super secret settings to dreams and glimpses into dimensions, maybe adding a twilight dimension