Recipe for a compliant society
1. Domed cities
This is less about aesthetics or about clean air than it is about control. You want a greenhouse, a place where you so completely control the citizenry that even what they breathe I not up to them anymore. 
2. Crack pumped through the ventilation system
This will keep everybody happy. Instead of a salary in currency you give them a crack high every few hours as an incentive to get more work done. The people who want to get high without working will be weeded out by the real workers themselves. 
3. When they have outlived their uselessness they get recycled
Eventually all they will want to do is get high all the time and their productivity will fall. This is the point at which you recycle them and replace them with the young fresh ones who have never been high.
