For the average punter, business class is just way too expensive (and extravagant) and premiumn economy on some airlines is also too expensive, as it includes lots of unnecessary extras.
I think that any 'extras' being offerred are to try an djustify the extra price. I am a big fan of PE/WY+ cabins but I know that all I am buying is space. If the airline tries to tell me that I am getting extras then I know that their cost to the carrier is minimal.
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"I tell you, we are here on Earth to fart around, and don't let anybody tell you any different." Kurt Vonnegut, Jr.