All of the boosts in the game are compounding. This means it is advantageous to stack a lot of enhancement buildings (such as a burger joint) on a single building. If you have issues with your quarries, try placing a lot of enhancement buildings and boost items on it. The results are exponential. Also make sure you keep upgrading it to increase production. This info will be better communicated in an upcoming balance patch.
I give a full five on just the fact i can save my settings and game to my computer. after having server sights crash and loose my saved data this is a big plus.
We are working on a new design for the random spin. Thank for the feedback.