If the GB represent all "tribes, peoples and tongues" how come they are top heavy with US members? If you take the 2008 WW report, taking the countries with the largest publisher count, assuming the law of averages, "impartaility" and a GB of 12, the make up would be:
2 likely from the USA; 1 likely from Brazil; 1 likely from Mexico; 1 likely from either Italy/Japan/Germany; 1 likely from either Phillipines/Russia/Congo/Zambia; 1 likely from either Ukraine/Columbia/Argentina/Britain and 1 likely from somewhere in the rest of the world.
Surely there are some annointed even in branches globally that Jehovah would ensure trully represented his people worldwide at the WW HQ?