Just because we have been doing it that way for 65 years doesn't mean that it is effective or efficient. Using tthat logic one could argue that the army could still use the No 4 Mk 1* rifle because they have been using the Lee Enfield bolt action for years and there's nothing wrong with it. While we're at it we'll stay with the WW2 battle dress uniform as well.Or, we just keep doing what has been working for the past 65 years? There is no reason the new hercs will not keep flying south just the same as the old hercs...if it was that much of an issue we would have stopped C-130 flights into Antarctica decades ago.
Unless we are going to fly a escorting KC down with every trip at added cost then what exactly is the point? Even the US does not do this, and they actually can.