Let me explain, Sky NZ is fully contracted and has been there for years. They also have signed with Optus until 2015 (includes existing capacity plus even more on D1) like it or not this makes them the MAJOR user of B1 with some 600000 subscribers (largest amount of dishes on b1) <br /><br />The 2nd major user that it would cause the most disruption to is the Aus govt with nationwide SBS and ABC feeds for the whole Aussie digital tv system. I don't think they fibre backup to every single DTV transmission site around Australia. <br />It might be possible to fit them on C1 someplace but it would still leave a large amount of retransmission sites that need dish repoints.