I vaguely remember us talking about the "entering Asia twice rule" recently and thought they did away with the requirement to be going between SWP and EUR. I will have to find that thread and review it. Thanks for reminding me of that.
For #3 (Asia-Pacific-Africa-Asia) I look at the first and last leg as neutral in direction so it turns into a westward trip since the only non-neutral seg is heading west. At least that is how I would argue it with the airlines. Thank goodness for what you said earlier, "Nothings definite until ticketed."
In #4, I considered the last leg as the only one with a direction since the first two are "neutral" by my terms ( and hopefully the airlines too).
In #5, all but the Asia - EUR seg are neutral but the xfer Asia twice rule gets me.
Now here is a question for those of you who are experienced with these tickets. I have only had one RTW ticket and it was pretty straight forward for the most part. Let's say I had a ticket from JNB - SYD - BNE on QF and had already done my stops in Asia. If I walked up to CX on the day of departure and asked them to take the coupons and route me JNB - HKG - BNE, would they accept it?