Actually they didn't want the game to become a chore (building roads, cleaning pollution...), growth can be achieved just by buying European workers of choice, once your economy is soaring.
It's pretty pointless to build a second tobacco factory for instance, when one is already working to full capacity, especially since turns tend to take longer. It's just more of the same, once your colonies are productive you can cut the umbilical cord to the old continent.
The game -as it is now- is well paced, and making colonies a breeding ground is a bit creatively lacking, so the schools/education system got a nerf. What's the point of building citizens, sending them to school, sending them to work, when you can just select them from a drop down menu in Europe. Cobble a working industry together out of random arrivals is fun, but breed/educate/employ becomes dull fast.