Environmental Station Alpha has so many joyful little subversive twists in it. I like how I made a change to the world state and instead of it making it easier to get around, it actually blocked off multiple routes and forced me to figure out how to get around them.
Also I've been back to the lava area several times and they still haven't given me a Varia-Suit-esque upgrade for it. You just gotta be fast.