I have to admit, that my whole game used to be building and designing the world and the buildings in it then watching my environment being used by little people. A bit like Will Wright's original inspiration. I was prepared to accept that my world was now going to reach only to the edge of a neighborhood, but I can't come to terms with not being able to edit even that, and the much more restricted tools for even editing the lots and buildings. Yes, it was a huge YAY!!! to find we could move windows up and down, and change roof overhang... but the loss of lot sculpting and CFE has left it all feeling a little crippled. If it weren't for the fact I love analyzing hex data patterns and coding, I'd probably not be involved with The Sims 4 at all at this point.
I am hoping that before too long we can edit the neighborhood itself, including selecting our own fake houses and backdrop.