I like Nesmith. His role is an off-ball shooter who needs his teammates to commit to looking for him in order to get the most out of his offensive abilities. I think he has enough of a handle to attack closeouts, but not enough to create in isolation. Finishes reasonably well in the paint and can occasionally make simple-but-effective passes out of a drive. Brings hustle and a nose for the ball that the team often lacks, and will put his body on the line when asked to switch into the paint on defense. Willing defender, but it takes max effort to get him to average-ish at this point in his career. Fouls too much. Keep refining that shot, get more comfortable on defense, and perhaps most importantly, learn to protect yourself. All of that hustle doesn't help if you're laid up on the couch wearing a cast. Next year, I want him to be a fixture in the rotation, and occasionally one of the guys who closes the game on the nights when he's particularly effective.
Romeo's role, in an ideal world, is as a secondary ball-handler who can create offense for himself and for teammates by driving and dishing. The rub is that he's not actually good at any of that at this point in his career. The finishing ability he displayed in college has not translated to the NBA yet. Jumpshot is a project, but a vital one - he won't see lanes to the paint if nobody respects him from outside. Solid defender with quickness and length, but not good enough to keep him in the league on its own - that offensive game must improve. Was unimpressed with him this season, but I do acknowledge that it's hard to work on your game when you're out injured. What he really needs is a healthy off-season or two where he can spend a lot of time in the gym working. I think Romeo's potential is high if everything pans out for him, but he's a long, long way away. Next year, I think he's a situational guy who probably doesn't play every night, but he's also a wildcard - he could make himself very valuable if he shows life offensively.
A caveat to all of this: it wouldn't surprise me to see one or both of these guys traded in the offseason.