I would like to see an new airport in the Thames Estuary and think that for once Boris has this right. Building time will 10 years plus but it will not just be an airport. If built and designed properly, with supporting infrastructure such as high speen rail links to the the UK as whole as well as the continent it could pose real competition to AMS and CDG and could potentially allow for the closure of LGW and LTN leaving STN to ryan air.
I also agree with airpocket on who should run it with just one slight alteration. The Spas must be run by the Balinese.
Above all however the BAA must not be allowed near it.