Our buildings shape the public spaces, but the public spaces of sidewalks, roadways and transit corridors in turn shape our density and how our buildings are designed and used.
New York City is still trying to figure it out. But, others can learn from our experiences. To paraphrase Oklachusetts, if Oklahoma City's goal is to create a walkable, urban, downtown environment, than the infrastructure needs to encourage people to experience their city in a way different than the suburban dashboard experience.
The larger issue at stake is how to position the city and the opportunities it provides in a place that doesn't fall behind and decay because it is still based on, and growing from, early 20th Century planning. If you can attempt to solve the bigger problems that are far beyond not having enough convention space, then you become a benchmark for the rest of the nation.