Both Brea and Robinson can play the 3. Smith or Small either one would be a nice fit. Would be flexible with Off/Def. having defensive solid Butler at PG to go along with assist of Smith and / or scoring of Small. Smith averaged over 7 assist per game, while averaging over 40% from 3FG, he only took 2.5 (making 1) per game. The bulk of his 13 PPG came from 4 made 2's per game and 2.3FT's. he is a more driving, score at the rim, hit the open man than Small. But a capable 3 point shooter, just not his MO.
Small on the other hand, better / versatile scorer (2 made 3's / 5.6 made 2's / 3.5 FT's) over 15 PPG, but less assist (4.1). Smith is a 37.4% 3FG shooter with a higher volume.