Exploration of Atrox. Instead of being able to drive around the planet make the air toxic. Create a tether/ air filter that will clean the air for a short distance. Make it use a small amount of power so you really have to have your base building and power creation skills down to survive there. These air filters do not "create" oxygen. they can carry air but the use power to filter out any bio-hazards at the same time. Essentially tethers' plus. Also they should have to be created by a small printer so you have to plan ahead better when exploring. the only difference in planets so far is aesthetic. THIS GAME IS AMAZING!!!