I do agree that all guides can do the paperwork, and that they are salesman. But having a guide who is attentive, who knows what is going on, and who is willing to take what you want and get it approved, when others say it can't be done, is important when you are making a large financial commitment such as
DVC.
Maybe my situation was unique, but I am very happy I have one who is willing to go the extra mile to get me exactly what I want when I am adding on points.