I've been as much a critic as anybody about Rondo, but Rondo's problems with "eliteness" have nothing to do with shooting. Of course, if he could shoot it would automatically propel him up, but with what he has it's enough if he just improves on them.
Good passer when he can become a great passer (improve accuracy and timing). Good defender when he cab become a great defender (better stopping penetration, less gambling, more discipline). Better job at driving by inferior defenders (and this doesn't mean going for layups). Be more active offensively, don't just stand there dribbling the ball while nothing is happening which happens too much for my tastes, particularly in 4th quarters. Push the ball more, control the pace better.
With all the things we see as "look at how awesome he is", he just has a vast amount he could improve on in just these skills that will make him for me a force to reckon with, and all without having to shoot the ball. And then back it up with consistency.