It's quite a nice idea actually...
So you start out with some simple bricks, not all of them, just some basics. The more bricks you plant over time, the more exp you get. Everytime you get a certain amount of EXP you level up. So 200 exp for level 2, 300 for 3, etc.
Until you get to level 10, which is when you finally get all of your bricks, and then you stop gaining levels.
(This idea is incomplete, if you have any suggestions then post them.)
