Forgive me, cdb, I'm just trying to clarify your view here.
Are you advocating that ATC should not tell airfield management until it's 'too late'?
Or are you advocating that ATC, when the airfield management tells them to relay a 'go elsewhere' message to an aircraft, refuse to do so?
I don't know of any tower ATSU that would ask the airfield management 'can we land the emergency?'