Basically, allowing people to create indoor-climates. This will be useful for cold and Oxygen-deprived places, like Asteroid-fields. A system that detects if an isolated indoor environment has been created, and if any "life support"-systems (Heat and Oxygen, currently) are activated within this closed environment. If that is the case, then the life support systems' reach will cover the entire environment. Or at the very least a much bigger radius than currently. Make sure to Like if you agree.
Starbound already have a feature that might help that.. Water dynamic. Create an enclosed area and install an artificial atmospher device on top. If a breach is detected, oxygen flows away. Hmm, crafting oxygen with water and electric spark?
Hm, could be a way of doing it. But to be honest, I think the game should just give you infinitive Oxygen, just like Torches or fireplaces last forever.