What would a football dome do to Orange County property values?

The Orlando Sentinel has reported that Orange County Commissioner Bill Segal dreams of bringing a football dome to Orange County.

How do football domes and stadiums impact mean property values? I went to Google looking for information about the impact football stadium has on real estate values. I found two differing opinions from two major markets that were considering/are considering building a football stadium.

• According to a paper prepared by Social Science Electronic Publishing, Inc., “the average expected amenity effect of hosting the Cowboys in Arlington was not significantly different from zero.”
• A FAQ on the Los Angeles football stadium website addressing property values says, “Typically good locations garner higher land values.”

The dream of a local football stadium is a ways off from being a reality. What do you think? Do we need a professional football dome in Orlando, Orange County? What are the benefits? What are the negatives?