Emerald Bank and Shops (MineClonia/MineClone)
N Freeman

Keep your Emeralds in a Bank and trade with shops

New Biomes
Arkatron

If you like underground biomes, this thing is for you.

Wisps
ElCeejo

Adds non-entity mobs called Wisps

pathv7 redo! (Mapgen V7 only)
1F616EMO

Creates a worldwide network of paths, bridges and tunnels.

Smoke Signals
Just_Visiting

Signal your friends, or warn your enemies!

Multiple Biome Generator
chaosomnium

230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids

Ocular Networks
mt-mods

Draw power from the world, and use it to power machines and tools.