Let's see what additional at-airport benefits Amex will restrict. Perhaps a crackdown against Priority Pass use to reduce Amex's costs arising from cardholders' use of such facilities? I ask this now because Amex has aimed at reducing the use of restaurant/bar use for its HKG-based Amex customers with Priority Pass from the Amex Platinum -- starting in August -- and done this so soon after changing lounge access rules for Centurion-branded facilities at airports.