Larry Berg hasn’t even started his new job as Major League Soccer commissioner yet, and he’s already being asked the most common question from North American fans: when will MLS introduce promotion and relegation? “I can understand the appeal for the fan, but I don’t think it’s a great way to build a league,” Berg said in his introductory press conference on Tuesday. “I don’t think it’s appropriate for our league. “The foundation has been built,” Berg said. “I believe Major League Soccer has entered a new era.