Everyone who disagrees with you (and they are many) will point to his versatility, which is where they/I believe your analysis falls short by saying he's a player we drafted to do X. The truth is (according to many other people, including our coach and GM), we drafted him to do X, Y, Z, A, B and C.
I'm imagining a cross between Sean Ellis, Lamar Woodley and Mo Wilkerson. Shaq's size enables him to do many things.