:There has been some discussion of this (it's probably in the Archives now). As I recall it, somebody objected to the examples being in the article space, due to their "how-to" nature. They suggested putting them where they are today. Wherever they are, and whether they are called "appendixes" or something else, IMHO they (and other examples) are essential to understanding the AHP process.  

 :Maybe they could be off-Wiki somewhere, but that would further discourage possible improvements. On the other hand, they are carefully-crafted examples, and as long as they are in Wikipedia, some well-meaning person could come in and inadvertently ruin them. I guess it's all a big tradeoff.