I think Rondo is an elite player in the NBA, but he requires other talented and effective teammates in order to be truly elite.
The problem with Rondo's game is he is playing in a different era of basketball, where ball dominator scorers are the key to everything in the game, especially in the playoffs. The problem with Rondo is he is not a ball dominator SCORER. Rondo is pass first type of a player and he needs guys to PASS TO.
I do not think Rondo is "every day" smart. He may possess a high on the court basketball IQ, but he lacks the smarts, for example, tarnishing his relationship with Ray, being less and less of a professional each and every season (the more and more he was given the keys to the franchise, the more and more he seemed to want to do things his own way and not in unison with the Big 3).
Had Rondo been truly smart, in regards to Ray, and helped bridge that relationship a bit, that part of the game, the passer to shooter part of the game, is $$$$$.
Too bad it fizzled out, Rondo could have had at least 2 more assists per game with a deadly shooter like Ray.