Hi Scottie Dog,
I believe that the plans for the Concorde development always envisaged use of a structure which could be easily dissembled and re-erected on a new site if/when circumstances require. So whilst news of the shelter is very welcome in itself, I wouldn't read too much into its implications for other planned developments around the airfield.
Apologies for not replying sooner; since the BA B777 incident my access to PPRUNE has been very intermittent.
All the best. SHED.