One comment on the article by Esperanza Suarez Kelly notes, "My friends at Curtis + Rogers have been working on this for a very long time."
And so there is part of the story. You've got a design group whose been working on a project for some period of time despite their not being any money reserved for the project to begin with.
Who wants this project done?
I'm certainly very concerned with safety issues in the area, particularly Brickell which is notoriously anti-pedestrian, despite being one of the densest areas in Miami. However I am always skeptical of any plans that begin to hatch before they are laid.