Kingdom Ministry School special elders prepare to accept and help others to accept the changes.
That's the important sentence. Something like ditching the two-witness rule in cases where it is a criminal offense could be handled by Letter to the BoE. Most of the other policy and doctrinal points could also be handled by letter, Watchtower article, or DC talk. If that quote is true, there could be an about-face about to happen on something core. There are hundreds or laws and customs, but there are only about a dozen core beliefs and policies that would really raise a question mark in long-time believers eyes.