What could be Minecraft's next major update?

Personally, I want to see another whole new dimension in the next update. At this point, we have The Overworld, The Nether, and The End. I remember at one point, Mojang planned for a Sky dimension, but that concept was rebranded to the End, but I feel like the End is more like an adventure completion with the final goal being to slay the dragon than anything else. It would be cool to see a complete opposite dimension to the Nether, like maybe the Aether dimension, and have the place filled with cloud blocks and a whole new adventure. I've seen many Minecraft mods that have tried to create something like it before.

 

We are constantly fighting bad things or walking around in hell. I would like to go to heaven and see constructive things there and go on an adventure

 

That's pretty much what my idea of an Aether region is, and then you would just have mainly cloud blocks to walk on. And maybe for some sort of fortress in that region (analogous to the Nether Fortress), you could have some "Jack and the Beanstalk" giant guarding the fortress and the fortress could house a bunch of new items.