I have noticed this on all airlines -- this just isn't related to HP. Although the US-East fleet may have a little bit more of a buffer, I believe JAX Pax is complaining about the LACK Of a buffer between the galley/jumpseats and the F cabin.
I've been stuck in the back of an HP 757 on a red eye and the FA's hung out there the entire time -- yes, it was annoying, but it was something I had to live with.
I've also flown UA in 767-300s alot, and noticed they have a partition that they can pull out and it makes a 'wall' between the left side of the galley and the lav -- which is nice for the poor souls stuck in the last row as it hides the light & their conversations.
I think that HP / US needs to really rethink some of these reconfigurations. the US-East config is very nice for an Airbus and passengers have commented on it. The fact they are turning them into slave ships is the wrong idea -- the US fleet doesn't always do shorthops that HP does out of PHX (in the same frequency). US has a sizeable international presence out of CLT, PHL, and LGA that puts passengers in that plane for 4 - 6 hours at a time. Once they loose the comfort, our US1/2/3's will bolt over to United where they are promised 4 to 5 inches of more legroom, sometimes as much as 6 inches, over the present US product.
We need to make a more SUPERIOR product, not inferior product, to the others. i'm starting to think that we're becoming more like AirTran than Southwest... cause at least on Southwest I can cross my legs in the last row of Y!