In ND6.5 there is a Welcome Page called Workplace that allows tabs to be created. The drawback is that you cannot drop bookmarks on the tabs. You are restricted to selecting two databases/web pages per tab.
Being able to add tabs with team names on each tab is a great idea, however many teams have more than 2 dbs/web pages that are used per team. It would be great if Lotus allowed multiple bookmarks to be dropped onto the top part of the page and used the bottom half as an optional preview pane.