I was just pondering the different ways to create a neighborhood.
You can do it outward ---> in, or you can do it inward ---> out.
In the first case, you start with the big themes and institutions, and then fill in the needed roles with sims. In the second case, you start with one family, one lot, or even one sim, and then work your way out by defining the world they live in.
I think I prefer the second, but it seems like it's tempting to do the first.