Rob has actually said captaincy does play a part. Lol, then to a lesser extent I have Hayden, Noffke and MacGill.
Murray Goodwin and Andrew Strauss have both captained. Think Rudolph and Amla have both done some part time, as well as Lee although I don't think he's a captain ITBT.
Fleming was an excellent captain. Pollock should've been in charge for longer, still can't believe he was the one who got the chop for that mess up at the end all those years ago. The SA Cricket board still are dumb as two planks of wood.
Sinclair's an excellent First Class captain. He definitely has better captaincy credentials than Pietersen and Lara.