If you actually want to protect children rather than do something which looks like protecting them, an Orwellian solution doesn't look likely to me. There's a risk that the authorities will end up doing very bad things to children if there's that much unaccountable power.

I suggest that the most stable solution would be finding a reliable, extremely attractive way of teaching empathy. I don't know if this would take becoming batman-- to the extent that it does, it would be a very different sort of batman than it takes to get a positive singularity, though it might be related by way of accelerating CEV.