I also think it may have something to do with door to door, not so much that it is done with, but changing the relationship of the "ordained minister" with Mother and clarifying it as a personal ministry.
Because it is really nothing more than a change because of legal liability to insulate the corporation, the elders must all be well educated to help the publishers realize nothing is really different, no more turning in field service reports, no organizational insistence on service groups, etc. - everything will be done to help the rank & file realize nothing has really changed as far as what Jehovah expects of them in their personal ministry ... new light shines that in harmony with Matt 6:3, their ministry is between them and Jehovah, the organization is just a tool of the fds class to feed and supply tools (tracts especially) for the ministry, not to regulate it.
These are areas addressed in the court case that was settled recently. Not ordained as ministers of the Watchtower, ordination to preach good news for their God ... Organization does not arrange mandatory meetings to train in ministry ... meetings for field service are not mandated by the Organization .... the Organization does not insist that records of ministry are submitted .... they said these things to a court, now they have to make them true.