The problem is the old ones varied CONSIDERABLY from sample to sample.
But isn't that part of the, ahem, charm of the original? You never really know what you're going to get. It seems to me that by introducing some minimal level of quality control to the manufacturing, you remove some of that quirkiness. I suppose that fits in with selling them at places like Urban Outfitters, where you go if you want a little bit of quirkiness, but not too much. The quirkiness is reducing to a predictable effect.