Ideally all fields and all project attributes are fully populated and its the users and admins responsibility to maintain the system's data fidelity. Yet in some cases, that may not be possible (yet to be assigned, yet to be known, not the right timing etc.) Workfront currently will identify these as "No Value" and will be named as such in Groupings. To the unsuspecting reader, this may be misconstrued as "Not Important." I suggest replacing these instances with "Empty" or "Blank" to notify that the field is not populated but the overall context may still be valuable.