Re. sub-stories, have you checked out the "tasks" feature, which is disabled by default? http://pivotallabs.com/users/dan/blog/articles/965-story-tasks-in-pivo

Re. sub-stories, have you checked out the "tasks" feature, which is disabled by default? http://pivotallabs.com/users/dan/blog/articles/965-story-tasks-in-pivotal-tracker http://pivotallabs.com/users/dan/blog/articles/965-story-tas...