Although I have had little time to play with this program, I have to disagree with you on one point. You seem to focus on the links of all the pages being included at the top of every page. This is not necessarily true. From any page you are working on, you can turn that off in the "Page Inspector" (open the inspector and click on the second icon). From there you can change the name of the page (which changes the link name) and/or uncheck the box about including that page in the navigation menu. How do you get to this page now? You can drag and drop the page from the organizer onto another page to include a link to it. While I agree that this is no "dreamweaver", it does bring the realm of web design to mere mortals.
iWeb: A First Look