Adding Jupiter would solve many thngs in galacticraft. Here are my ideas: I think driveing the spacecraft manually should be absolutely added, and navigateing to black holes and the Jupiter from your map could solve getting to black holes. And don't forget that there's a ring of asteroides between Mars and Jupiter, so even there would be a reason for your tier2 rocket's overstrong plating. Also, thick plating could make possible to penterate to Jupiter's atmosphere in red flames. Because Jupiter is made of gas and you can't survive at its deep surface, you will need some kind of aircraft to fly between storms and your floating bases. If moon dungeons' schematics contain 2 vehicles, and mars's 1, so you could find your aircraft's schematic on mars. The most important: why to go to Jupiter? Its atmosphere is made of gases, so you could refine it to more powerful fuel, that could solve getting other galaxies. Also, in your Jupiter base, you would need a lightning rod !