North American releases don’t typically have much in the way of extras, which is in line with the goals that the distributors have for profitability. I.E., A Relatively Small Market, Small Product Runs and Sharp Price Competition from other Distributors. With all that pressure it is surprising that there aren’t a whole lot more QC issues ( I’ve another hobby that the largest supplier of product in the US has had massive QC issues over the past decade. ) in the NA Anime industry. I’ve only ever had to request replacement disks once for a couple of Funimation Case Closed DVD’s. Really rather remarkable.
In the end what is happening is that AoA and now Pony Canyon are attempting to recreate the Japanese market for their products in North America, which means pushing the physical release market towards being driven by “Uber Collectors”. This is rightly being greeted with an amount resistance by Anime fandom and appears to be on a fast track to a train wreck. 
Mark Gosdin