personally not big on economy sims, but this seems like its got the correct ideas with just a lack of development time (but its a gamejam after all so thats normal lol).
leaving a planet had me go back and forth between planet and space for a few times before i could actually leave, and using the actual enter key is not the most intuitive imo.
I think just having fuel last longer would go a long way to make this more fun, because i found that sometimes you can just run out before getting anywhere, which is pretty unfortunate.