I like watching Somdev but that is a frustrating thing about him. He can get lots of pop on his serve at times, but he really needs something to finish off points. A good illustration of how college tennis will take your game a good amount up, but then the next couple years are important for development. We've seen John really step it up off the ground and work on his fitness, but Somdev hasn't quite taken that same type of step
His first problem is he seems scrawny and pretty weak. He needs to hit the gym a bit. He doesn't have very good racquet head speed. He doesn't finish across his body, he sort of pats the forehand and it's too windshield-ish. His backhand is ultra-stiff. He's also not as good of a mover/footwork as advertised. He does need to develop much more, he may not have the money for an elite coach, but he needs a really good coach who will deconstruct his game and really incorporate more assertiveness, more variety, and better game play. As you say, he has his college game with some small tinkers. It shows you how great of a college player he is that he can go as far as he has in the pros with the game he has, but he's not going to go much further. I don't see him improving much more, it's not natural for him to be aggressive, he makes wild errors trying to do so, and his serve percentages and second serve aren't good enough when he goes for his first service.