I'm perfectly fine with both Rozier and Brown shooting where they're at (high 30s and low 40s from 3), but both could improve at getting to the rim (Rozier) and converting at the rim (Jaylen) significantly.
I was frustrated with Rozier's inability to take 6'9"-6'10" guys off the dribble last night and throughout the series. For as much as some were calling for a Kyrie trade in confidence of Rozier's improvement, it's hard to argue that Kyrie can get to the rim at will and convert at an absurdly solid rate when Rozier's primary scoring weapon is a streaky 3 point shot and fast break opportunities. It shows in his overall FG percentage and his inability to consistently score 20+ nightly. Rozier is a replacement starter and good backup PG at this stage in his career and I think this series put that on display.
As for Brown, he's gotten so much better it's hard to pick on him, but he needs to stop bringing the ball down to his ankles every time he gathers to go up for a shot at the rim. He gets stripped, blocked, and tied up as much as anyone and he shouldn't be having that issue with his incredible athleticism vertically and from a quickness perspective. He has a bright future ahead of him and is already a solid player, but that kind of inconsistent finishing is what made Jeff Green so disposable throughout his career.