Reduce the operating time of the jetpack in space to 0.5 - 2 minute (Reduce fuel).
Limit the work of a jetpack on planets. A few short jumps are enough. Or completely block his work during gravity 1.0.
With this you will need to add a personal parachute.
If bullets hit an astronaut with balloons, it should cause an explosion :). (Love fireworks). Hydrogen tanks in ships explode. What is the difference between large tanks and small ones?
This optimization will solve many of the problems voiced earlier.
a problem with griefers. It will become easier to defend against them. They will not be able to quickly get to you and, accordingly, the problem will disappear.In this case, the capture of bases and fights will become more interesting.
Or for example, those who want to enlarge the planet will find that it is not so small :).
Stairs become relevant. And the elevators too :).
To make out the fallen satellite, you have to get into the car or air craft.
Which needs to be built and which are useful when capturing bases or transporting ore.