I think WP:VP would work just as well. A lot of people have been complaining about the banner, as if it was cynical shilling for money on behalf of a rich organization and wouldn't impact what most of us work on daily. I think a donate banner, even one that is somewhat obtrusive or irritating, is a small sacrifice to make in pursuit of the same goal to which we already donate our efforts. Some folks don't seem to realize how important the fundraising drive is to the Wikimedia Foundation and all its projects.
Nathan