It is a pity that the Stansted Express is just a name. Express it clearly is not and cannot match Thameslink/Midland mainline for capacity or frequency!
St P to Luton Parkway in 23 minutes, plus many other Thameslink trains per hour, some of which go through London, onward to Gatwick and Brighton. Head north to Leicester, Sheffield and beyond.
The elite already are most used to flying from Luton, some of which have transfered from Heathrow Concorde to Bedfordshire. Luton is Europe's number one executive airport, offering 24-7 availability (am I wrong)?
Stansted is still in Essex, surrounded by NIMBYs and planning to fleece customers at other London airports to pay for facilities that the incumbant airlines do not want. (I do believe this possibly happened in 1991) The current terminal reminds me of the London Underground. Available, dirty, cramped and cheap!
I wonder what is happening with FlyFirst?