Good answers to this one, more than 3 years ago.
This is a tricky question, so let me explain.
We're looking for the player who has EVERYTHING in balance, not necessarily in excess, but the entire package is there. Offense/defense, forehand/backhand, rebote, court sense/athleticism, power, you name it. No single attribute necessarily stands out when you're talking about this player.
You'd think such a player would be at the very top of the heap, but not necessarily. You see, although the traits are perfectly balanced, they might not be particularly strong.
On a side note ... would you ever consider calling this player 'boring', i.e., nothing to talk about?