The only thing remotely “disco” about the newly completed renovation of the Kroger at 3300 Montrose Blvd., aka Disco Kroger: The tiny lights inside the new letters on the newly stone-clad entrance. And they’re now covered in plastic. No disco ball in sight. But inside the 41,000-sq.-ft. store, it’s all hustle: Most of the checkout lanes are now express lanes, designed to get shoppers with less than 20 items out the door as quickly as possible. A new QueVision system monitors the number of customers and open lanes, helping cashiers predict how many will need to be open in the next half-hour: