I'm going to don the flame suit here but what's the big deal with PB anyway ? To get to sit down for even longer than an eternity ? If the main reason is to ensure you get adequate access to the storage bins then I think that's a whole different problem (or maybe 2 problems). The airlines should police the kitchen sink brigade and I think that's starting to happen and they should also police the Y pax dropping their carryon in the J bins as they move down the cabin. Apart from that is it such a big problem standing in line for a little while and then you'll get in line in the air bridge anyway. I think it's a perception thing, I'm more important than you cos I fly a lot so stand aside. Otherwise, why would the airlines make such a big deal of the benefit.