I have really mixed feelings about the use of endnotes for citations, at least at this point, when we're trying to get the article ready for featured status. The endnote system is promising, but it's still experimental, from what I understand. It's also rather user-unfriendly. It's difficult even for me to add endnotes, and I've been editing for almost two years. If everyone disagrees, that's fine, but my preference is to use simple Harvard-type citations, which I like anyway because you can tell what the citation is, the date, and the page, without jumping down to the endnotes. I also thnk it saves space, making the article shorter.