The only comment I'll make is that short-bodied ones seem fairly common based on the reds I've kept and the pictures of reds I've seen online. I believe this to be a genetic issue that's probably been heavily influenced by the line breeding. Some people like short-bodied fish, but I personally don't care for them. I also lost my shorter-bodied one to bloat. Sometimes fish who are short-bodied have issues with that.
My remaining red sev is about two and a half years old and 9" or so. It's one of my favorite fish.
I wondered for a long time if these fish were just hormoned gold severums. Discus are color-fed and hormoned to bring out their intense red color at an early age so that they'll sell better; there was always the possibility that the same techniques were being used to create "red" severums. I've had my red for over two years and he's still a deep, bright orange. I do not color-feed. This leads me to believe it's truly genetic, as hormones and dyes fade with time.