We actually ended up with pretty similar concepts. I like the idea of having to balance between using your water for fuel or turning a profit. The only issue I had is that the early numbers are fairly hard so if you use up your water traveling to the east planet first without making any upgrades you end up stuck very quick. So the early game could be a bit easier to ease people into it. Love the concept though and the travel animation is really neat!
As an aside, really love your tutorials on YouTube! I didn't have much time to learn GB Studio ahead of the jam and your tutorials are some of the best to get deeper into the engine. So you're a real life saver!