Closing a range opens up the airspace to other users. No longer will the jets have to fly fairly rigid paths to that the bombs land in the range. With the range closed they can fly where they like over the airfield and spread the pain. As the airfield, by definition, is free of dwellings, and aircraft avoid the towns, when it becomes class-G airspace it will be open season.
Without a booking system even the English air force would be free to use the airfield any way any day.
As they will not be based in Highland and there will be no local patsy to complain too the complainers will have to start again.
Better what you know.
Also how many tourists know about the range and deliberatelyavoid visiting the area? How many repeat visitors does Tain attract? In 10 years I was never encouraged to drive round Black Isle (no bridge) and venture farther.