I feel like when you have these mega developments where 10 condos go up all at once in the space of a few blocks, they end up as "bedroom neighborhoods", where people sleep but don't do anything else. There are a lot of these happening in Canada right now. There's one on Victoria in Waterloo. Concord place in Toronto is another example. I don't see street life there. I only see people going to or coming from somewhere else.
The best neighborhoods are the ones where there is a broad-strokes master plan, but beneath that, some amount of decentralization in implementation. Then you get a diversity of ideas about how to live all in one place.
Maybe there are words for this I don't know.