Or you can be a real minecrafter and actually mine and craft for a purpose other than gaining credits. I mean, don't get me wrong. We need credits. But it's kind of time inefficient to empty out a dessert or build a cobble wall. Unless it looks good or you need the credits immediately, what's the point? You might as well experiment with different architecture, constantly building and tearing down buildings.
That reminds me, would it be a good idea to add credit gain to smelting? For every item smelted, .5 credits?