A new White Sox stadium near downtown would make the most of views of the Chicago River and the Willis Tower, bringing explosive growth to the South Loop, prospective developers said Wednesday. Drawings from Related Midwest show a new stadium with walls of windows looking onto the South Branch of the Chicago River, while spectators inside gaze onto the skyline, with new high-rises just outside the park. The development would generate a $9 billion investment, $4 billion in annual stabilized economic impact, and $200 million in annual tax revenue, according to the developer’s projections, which …