John Semcken, a vice president at Majestic Realty, hopes to have a team committed to the new stadium by 2010. But league labor issues could delay plans. (Reed Saxon / Associated Press / January 7, 2009)Since the Raiders and Rams left Southern California after the 1994 season, several developers have come forward with grand but ultimately unrealized plans for bringing the NFL back to Los Angeles. Plans have been floated for stadiums in Carson, downtown Los Angeles, Anaheim and Pasadena's Rose Bowl. But at least for now, the proposal attracting the attention of state and local officials is developer Ed...