There is a lack of necessary dynamic spaces that change in character throughout the day as people flow in and out that you look for in great urban areas. There is no real mix of residential, commercial, park, and event space that create a dynamic living environment.
We can keep going back and forth but it seems like you don't really understand the value of having an entire city be walkable, not the the city center. Because just having a walkable center is not a great urban city; it's the definition of poor planning reminiscent of suburbs all over the world.