I'm going to start by saying that I love mining! It really gives the game a new dimension. But I think there should be a little more. Maybe a few missions where you have to take cargo to a station. The CSC mission is great but really hard to find. If you could make money by delivering cargo, it would really add some depth.
Another thing that would really be cool is a bounty hunter station. When you docked you could hire a bounty hunter or become a bounty hunter. For instance, one of the missions could go something like this.
"We'll give you five thousand credits to go to the Groombridge system and kill this smuggler that's hiding out there."
You would go to the Groombridge and find an E500 with a particle beam. Kill it, get five thousand. Run away, get a few Molotoks coming for your skin.