Yeah, this also seemed dumb to me, almost like they rushed this part in order to put the game out. Honestly, when running around on a planet with a breathable atmosphere without a space suit on or with the helmet off, the oxygen/CO2 meter should really be swapped out with an old school stamina bar that doesn't damage health. How are you going to die of hypoxia when you're not wearing a space suit and have access to plenty of breathable air? At least with the helmet on, you could make the argument that your character is outpacing the suit's ability to recycle its available air supply. Such rushed game design... no wonder the game doesn't feel as immersive as it should. Suits, at the very least, should have varying degrees of protection against certain environmental conditions based on insulation amount, if the suit is not insulated enough against certain temperatures THEN you should have to worry about heat exhaustion/being roasted alive or frostbite/hypothermia, and I agree completely with the poison gas vents, and really radiation should also be a non factor with a space suit on. They really messed up that whole system, in my opinion... The level and type of protection should also depend on the environmental conditions where a suit is purchased, found, or looted. For example, you would have a better chance at finding a suit that protects against extreme cold on say Pluto, or extreme heat and acid resistance on Venus, or any other planets with similar conditions, or something like that, also the space suit undergarment should add to hot and cold protection, if you choose to wear that underneath your suit. Again, they REALLY skimped on that part, and Todd's comments about "not wanting to make things too complicated" really come across to me as more of an excuse, and a bad one at that.