I suggest ISO should define an international trans network numbering scheme that could be adopted as the IPv6.010 numbering plan, the same way as the ccTLD list is the ISO 3166 2 letters list, and IDNA uses unicodes etc.
The ISO is already in charge of NSAP addresses. I don't see how importing the complexity that exists there into IP is going to help us.
This would relieve IETF from these user, political, etc. oriented inapropriate controversies.
There is very little, if any, controversy in IPv6 addressing. Ask for address space and you'll get it. Moving addressing issues to a new organization would in fact create controversy as it is virtually guaranteed that address policies and routing policies will fall out of alignment, to the detriment of the net as a whole.