Tony simply needs to learn how to incorporate the "dish" to the tail end of his drives, if he wants to be effective. Ironically the few times I've seen him actually do it, he's tried to set up Nikita and Daniel, neither of whom are capable of finishing... For Tony, it's just a matter of his general IQ on the floor, not vision per se, but really how he sees the floor and himself on it...
Nikita really just needs to start thinking like a roleplayer, primarily setting better screens and moving without the ball. He tends to muck up the offense, either by going out of position or bailing out the handler prematurely. Since he can't shoot and can't score, he might as well do what we brought him in to do. That's play defense, rebound, set good screens, and be vocal. If he can get garbage buckets as a result, then more power to him.
I'd love to see Carson utilized more as a facilitator in the high post (ala Boris Diaw), far more than I like seeing him jack up threes. Similarly, Carson would be really effective in pick-and-pop sets if we can teach one of our PGs (I'm thinking TC and CJ would be GREAT at this) to run it more often. I'd also like to see Carson's motor be a bit more consistent. He'll never be Arsalan Kazemi, but he could try more than half of the time.
As for Travis, I'd really write plays to get him open shots, primarily on the perimeter, and to limit him in isolation. He's another guy who would succeed in pick-and-pop/pick-and-roll sets, and perhaps he'd even get to attack the hoop, as well.
CJ, like I've said before, is one of the more complete offensive guards we've had in awhile, so really getting him comfortable with the pick and roll would be huge, especially in terms of the versatility it suggests...