Hi, very interesting topic and I had no idea such a score existed.
Could I ask what relevance it has on the PIL? Given service in the air should be the same for any passenger within the same cabin, why does it need to be there? What possible use does it have at 40,000 feet apart from being used as some kind of differentiator?
I can understand why BA would want this in the ground and it makes perfect commercial sense – why not score your passengers based upon spend and then target them accordingly, but not in the air when each first or CW passenger should receive the same service regardless. Or is the PIL used for another purpose?