Players will always step up. If you look at last year roster on paper the only proven 3 point shooter at the high major level was Champ. Dylan and Wheeler ended up improving a lot and nobody really seen that type of jump from either of them. The 2 guys that they brought in that were suppose to be good shooters ended up not really living up to the role, Smith struggled shooting at high major level and Coburn was in and out of the rotation and was streaky when he did play.
With this roster, I think Jones, Pinzon, and Wusu all have a chance to be 35%-40% 3 point shooters. Jones was at 30% last year but if you watched his games, he has a smooth looking shoot and playing in a system that creates a lot of open transition shots, I think his numbers will improve a lot like Wheeler's did. Nyiwe I think has a chance to also shoot a high percentage, but at a lower clip than the guys mentioned above. And guys like Posh, Curberlo, and Mathis if they can shoot in the high 20's low 30's I think that would be a win, with them, you just need them to shoot just well enough to keep defenses honest and not pack the lane.
Then you have the guys that are unknowns that could end up being good 3 point shooters like Storr, King, and Traore. Storr from just highlights looks like he has a nice looking stroke. And that's a part of his game that's been reported he's been really working on.