Jajuan intrigues me...haven't seen him play. Is he a bit low in the draft due to a particular weakness? Ball handling? Could the Celtics hide that weakness? Would he have good value as a specialist? If he's a good defender sign me up..
I think he gets dinged because for the most part what you see is what you get. He's certain to improve his game a little more, because he's a hard-worker and most players get better as they get older, to a certain point. But since he's a couple years older than most players entering the NBA these days, he doesn't offer that superstar promise. Additionally, he doesn't do anything great -- he just does everything well. He's not going to be a 20/10 guy. Some people say he's also a little thin, and might get pushed around in the NBA, but I don't agree with that assessment. He's plenty strong and was arguably the best player in the Big 10, which is a very physical league.
So yeah, I think for the most part he's low because he doesn't appear to have a particular strength, and couldn't be a specialist. But I think you can get 15 minutes of quality reserve play from him a night, and you won't have so scream at the TV "No, don't pass it Jajuan!" And that's what the C's need.
As for Morris, he improved a lot as the year went on, but his jump shot is very inconsistent, and he had the tendency to run what we called the Darius-Morris-dribbles-around-for-30-seconds-and-then-shoots-play. I think he's got the potential to be a very good NBA player some day, but most of Michigan-fandom was very surprised he stayed in the draft, as he really needed another year to keep making improvements to his game. He's definitely a project, and would be best-served by playing a lot in the D-league next year, since he shouldn't see the floor much except in blowouts. He's definitely more of a pure point than Bradley is, but he's no more ready for the NBA than Bradley was last year, and perhaps even less.