It would be useful if the ILS range was extended or if there was an option to preset the ILS frequency (like irl). If it was presettable, all you would have to do is tune to the ILS frequency (at cruise, etc), and once the aircraft is in range of the ILS you would not need to set it up, as it would be already set up.
If the ILS range was extended, it would be useful for busier times when the ILS is being used from a further away point.
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