Mining risk / reward
I think there should be a few places where you have extra challenges, but you get far more resources for end game.
For example I think there should be a planet with high gravity. (your normal miners don't work or can't carry much and getting your resources to orbit is also hard) You could also have more ores the deeper you go. The new temperature mechanic should also have some risk / reward attached. (ie a very hot or cold place has lots of valuable resources) If ships are not affected by temperature then this would only mean that you can't mine by hand and it's really hard to repair broken parts, but that would be enough.