Thank you for the feedback.
You described the possible future of this game well.
It is right, that there is now only these parts of a space game,
and they can be improved and made more intersting.
But also new features can be added.
There is the possibility to open the "galaxy" with some simple procedural formula.
But maybe first make these characters interact more.
Also some sub-missions could be inserted before you get the ray-stones.
All of your suggestions and points are very good.