I began my thru-hike this year, but am currently off the trail due to issues at home that I need to tend to. What I found was that the AT is a unique experience (as is every wilderness experience I have had over the years). So even the experienced camper/outdoors person may not be prepared. During this brief hiatus, I have used the time to rethink my gear and approach. I lightened my base weight from 33 lbs to less than 15 lbs by purchasing a smaller pack, sleeping pad and using a lighter sleeping bag. I also am leaving at home extra clothing that was not necessary. I found that I was carrying way too much food because re-supply is so available. However, I am adding an mp3 player loaded with books and music to comfort me during those long nights in my bag. I also was carrying too much water as there were plenty of places to re-fill. This winter has been unique but I was never cold at night.
The best thing that outfitters could do would be to direct customers who are contemplating hiking the AT to this site or download Winton Porter's gear list and give it to the uninitiated.
The trail of discarded gear, clothing and food is testimony to the adage that experience is the greatest teacher.