Well they won't need a 6000ft runway that needs maintaining without a route network that demands a runway of that length.
I can remember walking around the airport years ago on disused sections of runways after their lengths had been reduced.
OK I am going to make a prediction. The main runway will be closed thus freeing up a large amount of land while the airport keeps its 998mx23m runway for light aircraft with all of the land to the east of taxiway Echo being built on.