We can certainly all agree that WW is ripe for a new attraction to recapture people's attention. I really appreciate the effort they've put into fixing the place up in recent years, but it still doesn't have many attractions to begin with.
As far as the topic at hand goes, being down 20,000 doesn't sound all that bad on the surface, but I have no idea what WW's numbers are usually like. I would guess they only get on the order of 300,000 visitors per year, and even that might be a tall estimate.