Nice review of Leaving Earth. I have both expansions. I really like Outer Planets, but when I added Stations, all of a sudden the game was just too much. Too many cards, chits, math. Overwhelming. I’ve never played it with Stations and haven’t even pulled the base game out in a couple of years. The whole system is very elegant, even though it’s math heavy, but Stations makes it collapse under its own weight IMO.
Also, I own both Space Corps and High Frontier. Agree with Tom’s assessment of both. High Frontier might be the best simulation board game ever made, but it’s a real beast. I’ve played a few games over email, but never a full game IRL.