I can't wait to see what I am calling "Section 2" is like. Since the first section feels like the first game. Nostalgic building, but a little more complex. It almost feels like a good first area for strategizing and learning the game a bit more. I hope the next area is really cool! Of course however long it takes before the storm leading to the new area is introduced. Also I feel like there should be more reason to play as characters other than the engineer since the idea of the building speed alone almost trivializes the need to use the miner or the pilot. Not to say either aren't useful. Though in a rts with structures you may want to use the engineer anyways. I feel like the next area should get someone out of their comfort zone a little, challenge the player while also being enjoyable. I keep circling back to the idea of a cavern with moe unique slimes. While there may not be any more enemies that doesn't mean slimes don't evolve to take certain forms. Sorry if I am a little too enthusiastic I just really love this game!
Honestly I feel like the Pilot does a better job at building than the engineer because at larger sizes you can build more structures at a time since the Pilot's wider. Not to mention, she carries more energy as well, which means that you can build more structures without needing to refill as often. And even when you do, she gains energy faster as well because she can stand in front of more power sources at a time and becomes bigger faster.