And rondo is a pure passer and uses has one of the highest basketball IQ's in the league, so how is his athleticism gonna drastically change him?
he relies on short, quick bursts (ala CP3) to get wherever he wants in half-court scenarios, and then blinding/balls-out speed in transition. Andre Miller is not quick or fast by any stretch of the imagination.
i'm not as down on Rondo's shelf life as Jody is, mainly because of what you just said - pinpoint passer with high bball IQ. The point I was trying to make, is that Andre Miller is a bad comparison of Rondo's potential longevity in the NBA, simply because they are not the same type of player and do not play the same type of game.