I'm of the opinion that every new sports stadium should have a retractable roof. A lot of Indiana taxpayers would disagree with you. For the Colts it was a cool waste of $75 million. They closed the roof on the beautiful day that was last Sunday, 80 degrees and sunny out. Why? Because it wasn't 72 degrees, the temperature they keep the stadium at when the roof is closed. I believe they had it open for one of their games earlier this season, but guaranteed it won't be open for any remaining games this season as the temperature drops. That's a pretty bad return for 10% of the stadium cost.