thedman,
According to what you're advising, one would have to wait until after the start of school to call and find out what was wrong with their previous application to decide whether to reapply or not. Isn't this usually too late to apply for the next cycle?
macdown,
What a lot of people do is that they go ahead and submit their AMCAS with one school so to get their app processed ASAP. If they don't get off the waitlist, they can add more schools without having to wait for the processing time.
Any other waitlisters care to weigh in on this issue? Also, how many waitlisters significantly changed their PS to reapply?