The Spurs are built of players that know how to play the game, and aren't looking for personal glory. They all know their positions,and what they are suppose to do, and try not to do any more than that, just do what they do to the best of their abilities.
They are a very balanced team, and the role players can really shot the ball well and play very good team defense.
I think this is the style of play that Stevens is trying to get the players to do. You saw him and Pop talking it up when they visited the Spurs, Pop seemed to take a liking to Stevens, maybe even gave his some advice. I think Rondo could excel in a style like this, as long as he has players that can shoot around him. If the C's can land Love, he would really open things up, even Green could excel in the system were he doesn't have to worry about being "the man"
I think DA and Stevens have already taken some cue's from the Spurs and started to build a hybrid old school Celtics mixed in with some Spurs style of play.