I have had the view that this campaign will not "disappear" anytime soon. It is, I believe, a permanent (or at least semi-permanent) branding platform.
It was conceived, developed, implemented and overseen by QVC Vice President of Brand Marketing Annette Dunleavy, herself a Q50 Ambassador.
If it has led to new customers (and new customers have increased) and best customers have grown their number of purchases and total spending, there is probably no need to retreat, at least for the foreseeable future.