SS,
Develop the site and sell the individual elements. If Docklands can be worth around £40 billion, I am sure LHR will be more so (Its right next to all those Thames corridor commuters, who would love to relocate their offices to London Windsor Views, rather than grinding their way into London Central each day.)
And there will be no unemployment around London Windsor Views - instead this will become the biggest development site in Europe, with jobs galore.
In fact, it is London Central that needs to worry. London Docklands will be right next to Europe's biggest airport, and have plenty of trade. London Windsor Views will be next to the wealthy lands of the Thames corridor, and so will have any number of private company offices relocating there. Meanwhile, London Central will be the sprawling dirty and overcrowded abortion that it has been for some time, served by a 19th century metro system that nobody has touched in five decades.
Where would you rather have your offices - London Windsor Views, London Central, or London Docklands?
....However, in your grand vision, the Thames corridor will become a ghetto of formerly occupied company HQs and service industry centres, as the main reason for them being in the Thames corridor was LHR!!!!!!!
So this new development of LHR with all this prime, high end financial/service companies will provide jobs for those formerly employed as security guards, aircraft cleaners, airline ground staff, baggage handlers, catering staff, lorry drivers?
LHR is the economic engine of West London and the Thames corridor. Just have a drive along the M25/M3/M4/M40 or their corresponding A roads and associated industrial/business parks one day, and see how many lorries have some connection with air freight or LHR, observe how many company premises you pass that have a connection to the same.
All those employees are suddenly going to be employed by the new companies who will clamour to occupy the site of a former airport which has very little else going for it, attractiveness-wise?
Also, just a thought, but if you refrain from using language such as 'Lummox Foster' and 'Ca-Moron' you might have a more engaged debate.