An update to change the world (again)

I believe that there should be new world gen types in Minecraft, as well as a few new biomes.

1. The Dunes: Dunes would be added between beaches and other biomes like they are in the real world. Palm trees (which would be added in the mentioned desert rework) and a new type of grass block that grows on sand would make up the biome.
2. Deepest Ocean: Generates to spread landmasses further away from each other, returning Minecraft world gen to continents. In this biome, mobs like an anglerfish would roam, and player visibility would drop dramatically.
3. The Far: Generates near the world border, and is essentially the restoration of the farlands. However, this biome would not need to be visited to get Adventuring Time because that would be annoying.
4. New Worldgen: A new type of optional world generation that puts colder biomes at the far north and south, hot biomes toward the center, and temperate biomes in between.
5. World sizes: I think an option to make smaller worlds like in Legacy Console Edition would be interesting.
6. Maps changing Y-Level: Maps should adjust to be able to display things below others. This way, actual maps of the Nether and caves could be made.