there may exist valid reasons in particular circumstances when the particular behavior is acceptable or even useful
I don't necessarily disagree that a migration over time may be useful, I disagree with the end state of an inconsistent behavior... The key here is having a date by which we enforce a consistent behavior���.
So let���s make up a date and push people towards it. No reason we can���t get to a consistent state, right? The Citylink IXes started life as community IXes, no reason we can���t make them community IXes again. How about your birthday next year?
Perhaps we could talk about ways to track who is opting-in and who isn���t, do you have thoughts on how to achieve that? I���m not sure I can think of anything technically. Does Citylink intend to publish this information? Perhaps we can encourage people to post on the NZNOG list when they change their ���mode���?
With that information, you could channel your energies in to an email to a handful of operators every couple of months. That would be totally reasonable to copy to the list.
Having said that, fair point on RFC2119 sir :)