I was thinking that it would be nice to add a deep underground/lava biome. In this biome you will have extremely rare minerals around, however you will encounter dangerous creatures like the earth golem, and of course you may die in lava. I also thought it would be great to add air biomes like floating structures. In this biome the creatures will be hard to fight, due to their air power. Also it would make the jetpack extremely handy. Still looking at benefits to going to these biomes and other dangers when roaming around it. Feel free to help add anything.
