Airservices hates the area frequency advice as they can't have half the east coast combined frequencies under one ATS officer if there's regularly 50 broadcasts going on across the region. 126.7 is no fix as no one in their right mind will listen to that frequency unless they have to lest they want to go deaf from over transmissions. Under the right atmospherics you can hear aircraft from 300nm away and that is a lot of airfields on the East coast. Flying RPT from the flight levels into a 126.7 port you just cant monitor the frequency that far out, it will just give you a headache.