The Tsarchitect blog has an entry about Giant with an interesting passage:
Wisconsin Avenue needs more of this healthy density. The example that this sets will be a lesson to Ward 3, demonstrating how a few stores and few more stories can create an enjoyable neighborhood center. Not only will the extreme non-failure of the site be ammunition for people who support smart growth, it will serve as a billboard for those who are not engaged in debates, that urbanism is possible in Northwest.
He includes an admonition that pedestrian improvements and mass transportation enhancements are key components to a successful result.