The screen snapshot below shows a very annoying issue.  It asks if I want to build a mining base in THIS asteroid cluster.  What asteroid cluster? If you are going to ask that question then you should be displaying the asteroid cluster in question so the player has the ability to intelligently answer the question.  The other option (which I recommend) is to just build the mining base and assume that the player sent the Asteroid Miner to that asteroid cluster because they wanted to build a mining base there. I do not see a need for checking with the player, especially if you are not going to display the asteroid cluster in question.