Oh hey, you used my friend's idea for different sets of Stage 2 biomes per map! Cool!
It's great to see the progress from version 0.3 to 0.4, kind of like the sense of growth while playing the game itself :)
A minor observation - on the earlier maps, once I get to Stage 3, if I have enough money I'll skip directly to fixing the weather and avoid all the cargo shipping. Which is a shame, I like the cargo boats and the stages of cleanup; I played a recent game and used them just for fun. That might be because there's too much money, but I'm not sure that should be reduced. Instead, maybe gate the weather systems behind 50% rocket completion? That makes them basically a separate stage, though. I dunno, just throwing an idea out there.
I saw a previous person request additional replayability of some kind. That seems like a sensible idea, although I don't know how you'll do it. But, hey, before playing this game I wouldn't have imagined an environmental city builder either. As a random idea, maybe on some levels you have to generate power in other ways from wind turbines? Solar panels? Geothermal vents? Water power? No idea if that's the right direction to expand towards, though, and I love the interactions already.