The winter coat nerf that did not only nerf winter coats.

[Dr Zoidcrab]

You dont take damage unless you're both standing on a space tile and cold. By utilising sophisticated temperature stabilizing chemicals (drinking happy elf hot chocolate) I was able to avoid damage in space without full cold resistance.  The amount of damage doesn't seem to be affected, only whether you take it or not.

The NASSA suit is only 100% if you wear a gas mask or space helmet with it, otherwise it's 50%; all space suits seem to work this way.