At this point, I believe Boeing needs to suffer the corporate death penalty, because it no longer operates as a net benefit to the public. It needs to be dissolved, and its assets sold off. Criminal charges should be pursued to the maximum support of the law against all of the corporate officers.

Those in the FAA and other oversight agencies who failed to properly oversee them should also be prosecuted.

Failing the above, perhaps it's time to revive an apocryphal custom of the Romans. The engineer of a bridge was required to have his home below it, as a means of enticing them to make sure it was well constructed. We should require that Boeing board members, and their immediate family, only fly in Boeing planes of same variety sold to carry paying passengers.