It's not that Rozier sucks, it's just that he should be handling the ball about as much as Avery Bradley. When he catches and shoots or comes off a pick, then catches and shoots, he seems to be very effective. It's when he tries to create for himself that he gets out of control. On outside shots, once he picks up his dribble and raises up, he drifts about 5 feet in the air before landing. And we all know his finishing limitations despite his ability to get by his man.
I am not giving up on Rozier. He rebounds like a mad man, doesn't turn it over (despite dribbling it off his foot last night), seems to hit open/set jumpers, and pokes the ball away from an offensive player as well as anybody. I am all for bringing in another 'sharp-shooter', but the defensive dynamics would change greatly if it's at the expense of Rozier.