Quote fromOpposite of the nether region, but the catch is that you have to go into the nether region to get the light stone. So instead of igniting an obsidian gate, ignite a light stone gate. Heaven is littered with flowers, and it is always daytime. The only mob are angels, who are like ghasts but dont attack and look like the player with wings.
Quote fromWell, a useful trait of heaven is that when you kill angels, you can get their wings, which allows you to travel at 3x speed in the air for 30 seconds. cloud is also a material, and is indestructible.
A: Why didn't you mention wings and cloud blocks in the OP? Did you just make those up off the top of you head?
B: If cloud is indestructible, how to you collect it?
C: The idea isn't very thought out.
D: Notch doesn't want to offend anybodies religious beliefs.
E: It doesn't add anything useful to the game.
F: Play of peaceful if you don't want hostile mobs.
G: Use the search bar. There are too many suggestions saying "we have the Nether (hell) lets add, *insert name here* (heaven)."
H: Look at the Aether thread. Grey Acumen linked to it.