So it looks as if two former mayors — Willie Brown and Dianne Feinstein — are going to be the chairs of a campaign for a new 49ers stadium. It’s a bit odd, especially since the chief consultant to the current mayor, Gavin Newsom, is helping run the campaign … does Eric Jaye think Feinstein and Brown play better in the city right now than his main client, who just got re-elected with more than 70 percent of the vote?