i know i'm in the minority thinking this, but small differences such as that don't seem to amount to much. a lot of confusion seems to stem from people not being informed of what's going on. "i fly X amount of times a year" doesn't mean that a person is any more informed about any of it. it just means that you've successfully plopped down the behind into the well used seat and jetted said behind across the sky. (there are exceptions to the rule, as some people are more observant)

it's relatively apparent the layout of each of the checkpoints. how the airport, airlines & TSA decide to do it is up to them. if anyone has ever spent some time asking the airline personnel or TSA about their checkpoint, i've found that most are more than willing to explain it. the melodrama about checking of the boarding passes gets old after the person in front of you for the Nth time goes off into some tirade. complain if it makes you feel better, then move on! keep the people-conveyor moving.

message is a general statement, sorry...i had to vent a bit.

that being said, it's not too much to ask to be informed of what's going on. i've lost count of how many of those flying early mornings for business who just "gave up" on trying and brusquely tries to push his way through and then gets stopped so that someone can check his boarding pass. communication is the responsibility of the airline/TSA employee, but it takes two to tango...