They obviously need more eyes (and ears) on the final product before it goes out to replication.
How about someone overseeing you at your job to make sure you don't make mistakes? I suspect very few of us would really "appreciate" such a suggestion.
Humans make mistakes. Adding more humans into the mix is not the clear solution some might think it is.
Quality control is part of any standard development cycle. It has nothing to do with scrutinizing someones work for mistakes. It's there to make sure a product that is released to the mass market has the least amount of faults possible to reduce the burden of replacements and costumer support.
This. Before the blu-ray sets are mass-produced at a factory, there should be a "master" set that is made by the studio. These masters should undergo a thorough QC to ensure that there are no technical errors prior to the production process. A QC may not catch some issues with f/x shots (how would a tech know if a phaser blast is missing? they probably wouldn't) but the audio glitches that have been reported should have been noticed at some point.
I spent two years as a QC tech. If the audio configuration on a show was wrong, or if the audio sounded tinny or overmodulated, it was my job to notice and to put it on my evaluation.