Interesting. Is this going to be related to the Heathrow by Invitation service, which is basically a paid-for VIP service. Maybe a lower end version of that?
I also wonder how the airlines feel about a premium BAA product. It obviously wouldn't get you any benefits once you're on the plane, but if you can get fast track service and possibly some kind of lounge access through a BAA product, how much does that undercut the airlines' own offerings?