evanb, when you say "with a consistent seat throughout the fleet" do you mean that in broad terms - i.e. they are all flat bed in a hard shell and have pretty much the same functions? I assume you don't mean they are identical - because they are not.
Apart from the colour scheme I've been on a 343 recently (March) that had a different design to the shell and so the pockets and storage spaces were different, for example. My bed also "drooped" at the foot end when fully extended but I presume that was a malfunction.
Piffling differences but, hey, this is FT... and we do like to sweat the detail.