Superb as always, hard to believe it's been six months already since the grand finale of this glorious epic.
Also on this extra specifically, kind of nerdy but since I've been studying rocketry a bit recently it brought to mind "the tyranny of the Rocket Equation". Rockets have to carry all their own fuel and oxidizer and accelerate to very high speeds, and doing more requires more fuel. But of course fuel and oxidizer are heavy too, and thus you need to add more just to lift the weight of adding more, which itself needs more, etc. Thus almost the entire mass of a rocket at liftoff is entirely propellant. In contrast, aircraft get fantastic efficiency benefits from having external oxidizer (oxygen in the atmosphere) and working fluid.
Adventurers here "rocketing into the hostile alien environment of space[the dungeon]" having to take everything with them, which means taking even more with them, and is all very expensive. Laios managed a transition akin to everyone using rockets and him figuring out how to make a turbofan instead, or do in-situ fueling. Enormous gains lol.