I think the entire focus on gun control, should be on how to develop the legal framework to decide, when certain individuals have to loose some freedom, as a preventive measure, based up certain patterns of behavior.

You could amend the constitution to have a quota system. If we could guarantee, that no more than 10% of society would be eligible for gun confiscation, do to reasons of concern, it might satisfy those that worry the government wants to take away all guns, in preparation for a fascist take over.