Just a small possible suggestion. After each upgrade I always go into the sitemap.aspx page and add a title to the page like this:
<portal:mojoPanel ID="mp1" runat="server" ArtisteerCssClass="art-Post" RenderArtisteerBlockContentDivs="true">
<portal:mojoTreeView ID="menu" runat="server" SkinID="SiteMapPage" />
I think all pages should really have title heading, even the site map. Visitors may hit the page from a search engine or whatever and a name let's the user know what they are looking at.