How many of those are regular high fare paying pax?
With Leeds been the second largest Financial City outside of London, then i guess that is where you would find a large amount of high fare paying pax's, But the quote for 100'000 potential LBA pax's travelling to other airports should be enough to encourage long haul routes not only to the States, but to other long distance destinations too, Maybe PIA will surprise us with an alternative to their already very well established ISB flights...