"1. How often do Qantas have an RTO? I mean a 'full on' V1-20 knots or less, not one where you realise that something is not quite right prior to 80 knots!"
One high speed quite recently where all 4 crew missed a couple of the RTO actions. People do carry around tiredness in the long haul operation and the more crew monitoring the situaton on the flight deck the better.
I'm not saying you always need 3 or 4 crew. Of course it's a 2 pilot aeroplane. I just know where I would prefer to have the extra set of eyes sitting, and it's not at R4!
Surely you can't condone using pilots as flight attendants. My worry is Qantas may use this more than for what it is intended. I don't think the flight attendants would be overly in favour of this either!