Remove cold slowdown entirely

[saccharineChampion]

I think it is important to keep some disadvantage to naked spacewalking, per Kiki. Perhaps the same check which hits you with space burn damage could apply a momentary slowdown effect?
The slowdown from walking into a hallway even half a round after a hole was punched in the floor is pretty miserable though.

I also like the more-incremental idea of Flaborized's, which would similarly still make spacecold a threat but also not make stepping into a cold hallway for a second drag you down awhile.