There's a lot that isn't explained or intuitive. What does "Boost Power" do? Is Boost Power on a cooldown? What's the difference between a blue connection and a green connection? What's the difference between a Level 5.10 Lighthouse and a Level 5.21 Lighthouse? The game sometimes says of a Lighthouse "0.33 units / sec"; is that all the time, or only when I've ordered that scrap be spent to create units?