The only place Legends will work 100% is Duxford, Duxford obviously do not want a private company running their event on the premises.
To move TFC to another location would I am sure see its demise. The big hangar by the M11 at North Wealds southern end would be perfect and I believe OFMC looked into that back in the 90s. again, moving staff etc is a pain and NW cant hold huge airshows any more.
Imagine ARCO and TFC movinng out of Duxford. the place would die.
I feel this alone now is the death of Flying Legends