A sneaky way to do it would be to give Oceania a full spot on the World Cup (which should happen anyway, otherwise it's hardly a WORLD cup). Then watch Asia lobby for Oceania to be absorbed into Asia to gain the full World Cup spot.
As an interesting side discussion, if the above did happen..would we want to go to Asia and get more competitive games, or keep Oceania and a nearly guaranteed World Cup spot every 4 years?