OZBUSDRIVER,
The only benefits I have seen frm the ADS-B Upper Airspace Project (UAP) is a few less position reports to be made when going to/from Perth or Darwin.
The 5nm separation standard will only be available when all UAP ground stations come on line.
SM4 Pirate,
The TCAS MEL allows unservicability for 72hrs from midnight on the Day of discovery. TCAS cannot be unserviceable for planned flight throuhg E or G airspace.
Does that fill you with any more confidence.
That is a very interesting rumour about an airline claiming the savings realised by not replacing enoute SSR.