I think this development is inevitable. Every other charity organisation in the UK who works with children has mandatory DBS checks for volunteers. It is outrageous that the Watchtower gets away with ignoring basic child welfare procedures.
You can only imagine the implications of every elder - and possibly MS - being made to have a criminal records check. How many thousands would just resign rather than reveal their past?
The org would argue that the meetings are held in open, public sessions with no specific teaching of children away from their parents. Whilst I would love to see this development as it would have a big impact on the running of congregations as the MS/elder roles become poison chalices and are basic child welfare processes but actually I don't think it does much to safeguard kids. The biggest danger to kids in the congregation is the procedural loopholes that can allow abusers to remain in close contact with kids. That's where the formal investigations coming up can really help force change on the organisation.