My humble opinion: Priority Pass is a great add on with airline memberships and airline status, as a means of completing a strategy of full access to lounges. However, Priority Pass alone is not the end all for airline club memberships. Many airlines that provide Priority Pass access domestically, do not allow access to clubs at their hubs. However, as an add-on, Priority Pass is extremely helpful. For instance, I recently flew a few times through Milan. The Alitalia lounge that I could use with my biz class ticket and Plat Elite status was hopelessly overrun. However, Milan airport operated a lounge steps from the gates of my departing flights that I could access only with Priority Pass. PP came through in a way my biz ticket and PE status could not match.