Okay, let's see who were the directors of S.H.I.E.L.D. in the comics and which one of them could become the director now.
Colonel Rick Stoner – First known executive director. Assassinated by the terrorist group Hydra.
Colonel Nick Fury Second known executive director. Level 10 Agent. Also only known "33rd-degree" S.H.I.E.L.D. officer.
Timothy "Dum Dum" Dugan – Third known executive director. Former Corporal of Fury's World War II squad.
G. W. Bridge – Fourth known executive director.
Capt. Jacob "Ski" Strzeszewski. Fifth known executive director. Former active S.H.I.E.L.D ground agent (Agent 10). Promoted through the ranks to become Head of Special Internal Operations for S.H.I.E.L.D.
Sharon Carter (Agent 13) – Sixth known executive director. Often detailed as liaison officer to Captain America.
Maria Hill – Seventh known executive director. Level 9 Agent.
Anthony Edward "Tony" Stark (Iron Man) – Eighth known executive director. Takes up position after the Civil War.
Norman Osborn – Ninth known executive director. Takes up position after Secret Invasion. He dismantles S.H.I.E.L.D. and renames it H.A.M.M.E.R.
Commander Steven Grant "Steve" Rogers (Captain America) – Tenth known executive director. Assigned as "America's top cop" by President Barack Obama following the Siege of Asgard, the arrest of Norman Osborn, the dismantling of H.A.M.M.E.R., and the repeal of the Superhuman Registration Act.
Daisy Johnson (Quake) – Eleventh known executive director. Former protege of Nick Fury and daughter of Calvin Zabo/Mister Hyde.