Maybe I am missing the point here......
If you are cleared for an ILS and during the approach the GP fails what do you do - scream at the controller because you were cleared for an ILS and there is no GP or continue with a LLZ approach???
And what do you do when you plan for an ILS into say Albany and you find the GP u/s?? Naturally convert it to once again a LLZ approach.
Get real, thats what we are trained for, to be prepared for outages. Or at least I was.................
Oh and by the way.....happy new year.