This is a new plugin which provides a flexible way to customize Structure view content to make navigation easier for XML files : it allows to display tag/attributes values or exclude some nodes to make Structure tree less verbose. Some customizations are already bundled in plugin (Spring Beans, Maven POM, Webapp, Portlet, ...) but you can easily change them or create new ones.
xStructure plugin is available through Plugin Manager.
NB : dependency upon XPathView plugin is optional
See screenshots and documentation here : http://xstructure.googlecode.com
PS : since my Internet connection is down, I won't be able to handle requests for some time.