Hello,
Cairn4! I want to offer a couple of ideas to your game. You can add, for example:
gym, where you can upgrade your skills.
Force - gives more speed of extraction of resources. Endurance run faster. It would also be a good way to add a rig.
Sorry for the error (if any). I am just Russian
Cairn4, I gave you an idea. You have the right not to implement it.
And something else! I like this game very much. I think you are doing it perfectly! Please do not stop making this game!