Biomes are the backbones of Minecraft. A simple plains biome has some advantages and disadvantages. But perhaps what if there were more, wastelands, tall forests and Saharas.
Firstly, wastelands are mounds of chaos that are liveable but unsafe. Forests are dead and trees are in decay.
Secondly, cold pains and gentle mountains are chilled rocks, but of course, the record of coldness goes to the Chilly Mountains.