Not much of a diary here but since everyone is putting bombs on their clothes - shoes and underwear - just fly naked. Seems that clothes are the problem. We need metal detectors to "see" what's under our clothes. So just get rid of the clothes.
Yeah, it'd take some getting used to and some infrastructure at airports that would allow people to disrobe and re-robe, but getting rid of metal detectors may improve the passenger flow.
Something may have to be done about how and when carry on bags get scanned, but one major issue threatening our safety in the skies - clothes - would have been eliminated.