It would be really useful if the various list views (My Actions, Table and the new List View) allowed you to see the action in its total hierarchy. This would be especially useful when filtering to Unstarted or overdue actions. Right now, I either don't filter, and end up with a huge list that's mostly completed actions, or I filter to that and can only see the action name and the project name.
What I'd like to see is a series of disclosure triangles to show me the parent action tree, all the way up to the project itself, so I can know where it sits. If a parent action is complete and the sub-action is somehow incomplete, or if there are multiple sub-actions that aren't completed and others that are, only show the completed ones necessary to display the hierarchy.
Basically, I would like to use my actions and list views to understand what I have to work on next, and doing that by project, action, etc. is supremely useful (and my org often doesn't use phases, so can't even do that)