Just thought, the rankings don't mean much to NZ at the moment really. (If we qualified for a World Cup or Confederations Cup) we would always be ranked in a low seeded pot.
However if we move to AFC or enter the Asia WC qualifying system then the rankings do become important all of a sudden. I believe the AFC use the FIFA world ranking system to help seed and draw the qualifying groups, and our low ranking could mean a harder group.
Ryan