Juan Viejo2: Rumors are that the Governing Body will be expanded to 12 to better match the biblical magic number of apostles, tribes of Israel, etc. That will also reset the 'magic number' to 8 needed to get a majority vote to make a doctrinal change. They think that more things will get done and decisions will come quicker than with the current number of GB set at 8. There are a lot of reletavely powerful and influential men at HQ and in the field who are over 60 and want their chance to be appointed to the GB.
There has been a GB with the number 12 in 1992 (From the 1993 Proclaimers Book)
The GB doesn't use the 2/3 majority vote for the appointment of its members. They use the unanimous vote: