True, but any buildings on the ASP would surely encroach on the safety distance for the runway? It's only 100m or so away. Also, the Jt NBC Regt have 'finders keepers' on the HAS sites, and moving them somewhere else has already been deemed too expensive.
It's a pity though, it would be great to have some aircraft back here - it gets a bit boring with only Rocks to banter after all!