None of those node tidiers will work within a compound node.  From my experience with this particular compound node, when you enter the node the first set of subnodes you see will be the nodes to modify.  Just grasp the banners on the nodes and move them around; just clicking on the banner will bring the back nodes forward.  Don't try to scroll the page.  At worst, undock the Material Room Panel, and make it bigger for better access.