So now, conceivably, when you're attacking a larger ship, it's not just about taking their shields down. Maybe it's taking their life support down, and maybe you kill a couple of people who weren't properly suited up?

You can take the life support down. You can make it at least malfunction, and maybe it scrubs the CO2 out of the atmosphere less well. And then eventually the CO2 builds up and everybody passes out. Or you just completely take it out and they breathe it all up, and you open the airlock and they get vented out in space.

Or you have a spy aboard the ship who poisons the atmosphere inside and kills all the crew.

It supports any number of gas compositions that the designers want to come up with. So it's not just oxygen, it's any gases. Star Citizen. We got gas.

Also, I like that it's systemic, because we can avoid bugs like not dying because you're dancing.