You say that like the current nose-bleed seats are bad though.That's what I thought too. If you have a look at the picture I posted above, there is room at the back for another half a dozen rows of seats, which would be about 10,000 all up. They would be even worse seats than the current nose-bleed section.
Having sat in both $25 nosebleed seats and $2000 per season cushioned seats, I can say that in terms of the viewing experience, it's pretty negligible. There aren't many bad seats at Optus.