Idea Spree #1: New world generation

The world will consist of planets that are 65,536 by 65,536 by 65,536 blocks. If we reach y level -64, we do not see bedrock; instead, a material called Sculk Remnants. It is unmineable, and needs a Dyed Enderith Pickaxe, dyed black, but we'll get there later. Once we see Sculk Remmnants, we enter the Sculk Undergrounds, with new ores. If we stay on the surface, we see that some forests will have autumn leaves. This is because they are dehydrated, and the only way to get certain leaves. There are also some new biomes: the Autumn Springs, Hot Springs, Polar Oceans, and Civillized Plains. If we head to the nether, we can see that there are new biomes: the Nether Skies(with islands of Nethairrack(and no, that is not a typo) and Mystic Powder, a block that has gravity and can be brushed), the Ruined Groves, and the Curving Nether Hills. About the planets, you can use the Elytra to fly between them(and to get to the other Nether planets, you must head to the Nether Roof) and there is no more Build limit. The End will be Revamped, with Ender Lakes with Enderrain, Chorus Forests, Endstone Mountains, Crystal Peaks, and Caves with Mobs and Biomes.