The original article is no longer available, but I guess this is the reason Seattle has height restrictions now:
The proposed zoning changes that will be sent to the City Council this week would allow skyscrapers in the city's commercial core to rise to 700 feet -- slightly shorter than the Washington Mutual Tower.
It would wipe out a cap on downtown building heights that residents -- fed up with a slew of office towers -- voted to impose in 1989.
http://www.skyscrapercity.com/archiv.../t-211908.html
Unfortunately that is from 2005, a 700-800 footer would look really nice in that area with another smaller tower or two but oh well.