Well stated 404Titan.....
Also Aus ATC are not trained in AWO/LVP ops because there is no requirement yet in Aus, so you are very unlikely to have any protection from the possabillity of LOC/GS deflection from aircraft or ground vehicles.
Can an aircraft follow an ILS all the way down to the ground?.. Yes!
What part of the airport are you happy to land on Jack?...
Without protections in force you and your aircraft manufacturer can not guarantee where you will be.
In Cat 111a or b the only lights you will see (if any) could be the runway or taxiway,or highway.
You will not know which, until they come to dig you out of your cockpit.