NO LAG IN THE NETHER
Basalt
Vertical redstone
More food
More plants
Limestone
More underwater life
Ability to stop ONLY squids spawning
Ability to press a button and spawn a nether portal in Creative
A minecart furnace that actually functions like a furnace
More ores
More minerals
More villager careers
Ability to spawn an end portal in creative with the press of a button
Ability to spawn all 20 end gateways at the press of a button in creative
More blocks available
More redstone-y blocks
