The most fun I've had in this game is completely and utterly ransacking each and every destination for as many valuables as they could possibly supply, the only one I couldn't do that with is the first mission where you investigate the crash because I was running on low oxygen and fuel, which felt compelling but could get frustrating if you focus too hard on it. The upgrades are also interesting but if you play like me, you choose liquid gold as your second mission and steal so much that you can immediately buy every single upgrade in the game. With upgrades I suggest making less of them just increasing capacity and instead more varied, like you're tweaking or modifying the actual systems of your ship, and make some of them conflict with eachother. Speaking of the ship, the design of it seems to suggest the faction pre-fabricates the individual rooms and just welds them together to make a new ship, maybe it would be fun if there was a mechanic bay of some sort where you could purchase, swap out, and add new rooms to the ship, like a grow room for farming that also generates some extra oxygen.