Richemont, which reports first-quarter results on July 16, has been in the headlines lately. There was the top management shuffle at the start of July, which installed new CEOs at key brands Cartier and Van Cleef & Arpels amid mounting questions about succession planning at the group tightly controlled by 74-year-old billionaire Johann Rupert. The shuffle came on the heels of the revelation that Bernard Arnault, LVMH chairman who has long…