Please read the pinned post on creating biomes and dimensions. This is not a category designed for entire huge updates, this is a biomes and dimensions category. Remember that individual items, mobs, and structures should still go in their own categories.

Vote for an existing idea or New post

20votes
Rain Forests (Jungle Variant)
17votes
Land of the Lost (Nether Biome)
10votes
The Wither Caverns
4votes
Nether Biome: Greek Tartarus themed
28votes
Obsidian Spikes biome for the Nether.
10votes
Nether Update: New soul sand in soulsand valley should be called Soul Stone
7votes
Nether Update: That red shrub should be called the Wraithweed
4votes
The Otherworld
14votes
Deadlands Biome
19votes
Lake Biome
9votes
Shadewood trees and "Lost" biome
3votes
Vortex and Dark Compass
26votes
Rocky beaches
8votes
The "ultimate​ dimension"
5votes
Crimson biome
15votes
Making every biome relevant! (Specialize plants)
12votes
Great river biome
6votes
Underworld Dimension (Beneath the Overworld)
8votes
Gravel "traps" generating on cave ceilings
6votes
Electrical Biome! (In my opinion the warped forest is way better)
25votes
Cave Biomes (as a concept)
4votes
Lightning dimension bone blb
31votes
Forgotten biome
11votes
Gravel desert biome for the Nether
18votes
Underground jungles
10votes
Large Oak Forest
11votes
Every End Gateway should lead to a different End biome.
15votes
Flower Biome should be less rare to find
3votes
the nether gardens
1vote
Turn Off Nether (or make portals that don’t teleport)