What worries me more about Rondo are all the questions marks surrounding his work ethic: arriving late to two playoff games where he eventually performs poorly, Tommy's remarks about him lackadaisically blowing lay-ups in shoot-arounds, the self-admission of not working properly and consistently his jump-shot till some kind of bet with Garnett this season already, the lazy defense he plays at times during games, etc.
As a player, he needs to bring it every game, not only here and there and to develop his jump-shot (who many see as a minor issue, but that will always be the recipe to beat the Celtics in a playoff series and serious impacts the rest of our offence): without sizeable improvement on those 2 skills, he can't be considered an elite PG like Paul, Williams or Parker, although he's in the bubble of the top-5.