For the past while it seemed like the Org wanted to keep dividing the Halls. We were told locally that the criteria was 100-140 pubs/10 elders = divide.
This was the C.O.s advice. They split our Hall but there was a lot of input by certain elders and their families and wanting to be with their friends so even though the numbers looked even the weight bearing members were not.
Both Halls started out with 70 pubs, 5 elders, 7 pioneers.
Now, one Hall is down to about 40 pubs and they have removed some elders and others have left supposedly to do other things where the need is "greater" rather than stick with that dead horse.
The other Hall is dwindling more slowly but dwindling...it has the nit picky elders who are slowly driving folks away. There are probably less half the pioneers that there were before the split, 3 in one Hall and 4 in another.