The idea is to spend less time looking for small things and more time looking for explosives. The new procedures include an increase in pat-down searches:
In addition, pat-down procedures at checkpoints will be refined. Currently, screeners pat down passengers' backs and abdomens. Under the new system, screeners also will pat down arms and legs below the mid-thigh, although they will be given discretion to forgo those searches in cases where bare skin or tight clothing make it obvious nothing is being concealed.
That last bit seals it: I've been going through checkpoints in just a unitard for a few months now, and will continue to do so. I won't be greatly surprised to see others begin doing something similar.
One of these days, the government will quit violating Americans' Constitutional rights, but I doubt it'll be any time soon...