Well seeing as the screeners are screening and not flying, I don't see that flight crews in line would motivate the screeners and speed up anything.

Seriously, though, if the TSA had a screener whose task it was to interact with the passengers on the front side of security and educate them, then maybe things would move a little quicker. For example, if we treated screening as a business and passengers as customers (I know, novel idea ) a screener could give customers instructions prior to reaching the x-ray and WTMD thus speeding up the whole process. As it is now, at least the airports I've been in, there is really no valuable interaction until you are right there at the x-ray/WTMD. And even then, it's just the TSA employees barking out orders. Whether or not you agree with removing shoes etc., if someone was working the line and advising people to remove jackets, laptops, belts, etc., then they would at least be somewhat ready by the time they get to x-ray.

But, hey, what do I know with these pie-in-the-sky ideas