Oh my goodness, I got bored and lost reading LA's lunatic ramblings.
As a recent passenger I can tell you exactly what stops people flying from LBA. £££.
it worked out cheaper for two of us to drive over to MAN and fly than drive the 45 minutes to LBA. It was quick, easy and convenient.
Another airport isn't going to solve that. Unless you want it to run at a loss for the next 200 years to pay back the loans maybe?
I appreciate the economics aren't simple, but consider this, the most commonly used commercials are 737 and Airbus 3xx series aircraft. So how is the addition of one 787 to the US a month going to suddenly make a Yorkshire airport a huge profit. The people who run LBA probably have a much greater understanding of the economics of the site/available catchment. North of Leeds (where I live) is not exactly what you would call overpopulated.