I sue the preview button regularly, and in all honesty, it is not your right to tell me how I build and edit my wiki page. I have a process which I follow that follows my train of thought. Therefore it is updated and edited regularly along the process. It is not the process, but the ends that it achieves.
I can understand your position, as it can tend to spam the recent changes board- and I will try to reduce the overall saves I make. But there will, without a doubt, be many more changes, and many more additions. And in each case, the article will be of an equal or greater quality to the one you reference.