ver's stadium, downtown a case study for ChargersSanders' itineraryKansas City, Mo.Why this city?: Close to a convention center, its nine-block downtown Power & Light District is billed as the midwest???s premier entertainment epicenter.What???s there?: It has shops, restaurants, bars and other venues, anchored by Sprint Center, an arena built in 2007 and touted as one of the busiest ???on the pla