don't write off the ILS just yet
let's not write the ILS off yet...imagine having to fix things on an ILS...drive your jeep out there to the localizer shack and fix it up.
or drive your space shuttle up to the global nav sat and get your space suit on and fix her up.
yes, a snowstorm knocked out the reno ILS two years running, and then the FAA decided to put the snow proof one in...Reno usually doesn't get that much snow and they had put the cheaper model in...it worked for forty years plus.
OH, the first landing by a commercial airliner doing an ILS was during a snowstorm in Pittsburgh , PA 75 years ago.
IF you are doing an autoland you are to advise ATC.
I've been number five in line on an ILS and no reflected signal from the planes in front of me.