What I find very interesting is how the clothing themes have changed over the years. As a foot fetishist, I could not help but notice that in the early years, most of the models were shown barefoot, but with bare chest only. As the years go by, Playboy gets more progressive by showing public hair shots, and then actual vulva, but at the same time socks, and then shoes on all the models.
Being the foot guy that I am, I think the trade-off wasn't worth it. But, that's just me.