Great article!  We have all had leaders who fit into the 12 signs above.  Unfortunately we have had some that fit into ALL 12 and even more.  Through my experiences, this could easily be avoided if for no other reason than if "in-competence" had never been placed in a position of such great importance to begin with.  That, in and of itself is the great injustice to the organization.  The 13th sign that comes to mind would have to be a corrupt mindset of "entitlement" rather than actually being qualified for the position and this is where "politics" factor in.