Upside Down Root Forest Biome in the End

The end is really dull right now; I think there should be new biomes. The root forest would be jungle-like biome composed of the roots of upside down trees growing from underneath the islands; with the trees being oak tree shaped on the bottom but a labyrinthine tangle of roots on the surface. New mobs could spawn here, and there could be large endermite mound structures on the surface with a queen that summons mites. The end-trees would be made of a new kind of wood with purple planks, and the end wood could be added to the end city structures in some areas (eg. doors).

Ideally, the outer end should be survivable without any equipment, just like the nether post-1.16. Adding a source of wood would make end survival a lot more reasonable.