Please read the pinned post on creating biomes and dimensions. Please put items for the new Mountains and Nether Updates in their proper categories. Remember portals are structures, that includes Nether portals.

Vote for an existing idea or New post

1vote
Nether temples
2votes
The dark swamp
4votes
Neather oceans
5votes
No Escape Effect (Nether Update)
1vote
Corrupted Water in the Nether???
2votes
[Nether Update] Anti Mob Spawn mechanic
3votes
(Dimension) Purgatory Like
1vote
"Reversen" dimension
13votes
Make the new Nether Trees grow from the Ceiling as well.
5votes
Add a tropical island biome to Minecraft
0votes
Teracotta Badlands Biome?
29votes
Gold ore generates in the nether
1vote
Lava caves
1vote
the upsidedown
3votes
Obsidian Spikes & Bone Spikes / Bone structures
9votes
Rocky coast biome
2votes
Dimension X
4votes
The Otherworld
5votes
Nebula Forest Biome (End)
3votes
Wither Content Expansion
3votes
Light Dimension
3votes
Dimension Choser
3votes
The Mushroom Island Biome Reworked
0votes
The flipside
9votes
Regarding the Last Biome Vote and Current One
16votes
An Actual Swamp Update
4votes
Laguna
3votes
The Broken Mirror Dimension
2votes
Badlands (Biome)
2votes
Shadow Relm