Either the local authorities have a tool to act in emergency or risk that the base goes rogue and that they can't do anything, but to have a lengthy siege against it. Besides, sharing an admin password with the authorities is incorporated with the contracts base builders make with the Bretonian Government. Either they comply with the terms of the contract or they will not be allowed to build a base in Bretonia.
What you offered does not seem to replace the need of complete control.