It would be good to hear him admit that certain procedures have no basis in scripture, or that other organisations have better child protection policies, or that Bible procedures are inferior to modern procedures.
I wonder if the topic of baptising minors will come up since that is the leverage that a JC has to threaten df'ing if the child victim speaks to others about their abuse, when the JC has not found 2 witnesses or has a confession.
WT even has pictures of small children being baptised in their cartoons under the 'Children' section, not the 'Teenagers' section!.