Considering what we know about the JW beleif that all information that seesm to slander them is from Satan I suspect they will close ranks. To the public all reports of abuse are just from disgruntled apostates and Satan. If that becomes the consensus then they will quietly go back into denial and believe they are safe. Do do other wise would cause too much emotional stress and perhaps cause them to think the unthinkable - the org does not have God's blessing.
Even though the policy exists it is inadequate to protect children. It is still not mandatory to report to the legal and/or social authorites. Even if the elders do tell families they can choose to go to the authorities there will probably be the added warning not to bring shame on Jehovah's org. Given that warning many will not go to the authorities because they will have no idea how to report this without saying they are JWs. I know that is what stopped me from going for therapy when I was older. Even those who go for help will find it so difficult to try to get help/justice without saying they are JW that many will give up and "wait on Jehovah".
People will still be forced to choose between the org and their children.
More attention to the problem is needed. More pressure on the members to inform them of their rights and the long term consequences of not dealing with this appropriately is needed. They need to get to the point where they believe not reporting is a greater shame on the org than immediate reporting. Once this one thing changes pedophiles will no longer be safe to stay in the org. Only then will the children really be safe.