PonyBoyProductions makes a valid point. The theme of this post (which I wrote) is that having your track rejected should be viewed as guidance rather than a personal slight. But when you receive the form rejection email, there isn’t much to help you know exactly what your track lacked and what you should work on to increase the quality of your submissions, and your odds of getting them accepted.
Obviously, with the number of new tracks AJ reviewers listen to daily, there is no way to provide detailed critiques for each rejection. It wasn’t that long ago that these forums were filled with posts bemoaning month-long review queues. Adding to reviewers’ time spent on rejected tracks isn’t going to reduce queue times. And then there’s the issue of “does Envato staff have any obligation to help authors learn in the first place?” Or is that a function better served by feedback from other authors in the forums?
AurusAudio’s suggestion of a checkbox containing a few common issues like mixing, samples, composition, etc. could allow reviewers to efficiently provide a bit of information without making the review process a lot more cumbersome. Something worth considering, anyway.