I think everyone agrees that the USPS has a systemic problem, but what we're addressing here is the design to that problem. Does this design improve the problem or does it make it worse? Are we trying to solve the problem or are we just making the problem look pretty? Your question is spot on about the experience of shipping something and I believe that our jobs as designers should be to constantly ask ourselves those types of questions.
I think everyone agrees that the USPS has a systemic problem, but what we're addressing here is the design to that problem. Does this design improve the problem or does it make it worse? Are we trying to solve the problem or are we just making the problem look pretty? Your question is spot on about the experience of shipping something and I believe that our jobs as designers should be to constantly ask ourselves those types of questions.