I just suggest that the content of this mod could be included in Natura for impoving a lot the Nether since this mod is dead and abandonned by their modders.
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1279248-the-nether-expansion-v0-3

I second this.

Sadly these bothe are pretty abandonned and include almost nothing from the original mod.

See
https://github.com/LogicTechCorp/NetherEx
and
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/wip-mods/2654036-the-nether-expansion

@Hypsellis The latest commit was 3 days ago, and they're the same mod. It's a WIP to bring back that stuff. No need for Prog to do stuff someone else is working on.