I've tried to watch the most Copeland minutes in the NBa I could the last 2 days and here is my take on what I've seen :
Offense : the guy is a scorer, he always wants the ball, is always ready to take the shot, got absolutely no fear about taking it. he's a little bit of a black hole, when the ball comes in his hands he's gonna take the shot 80% of the time. I've not seen a lot of passing from him.
He can shoot from everywhere midrange + longrange, he's got a face-up game, can put the ball on the floor for a few dribles Vs PF and SF got some good moves next to the basket. He's got some difficulties to finish around the basket for one simple reason : he can't jump, he's been blocked by Aaron Brooks on a fast break layup, he never dunk the ball even when he's alone. He's got no postup game and when he tried he's been pushed by stronger PF and explode when there is a contact... In a few words he is the opposite of Tyler.
Defense : like everybody know he's a bit slow to defend SF and to small to defend PF, but the biggest problem that I've seen is that a lot of times he doesn't look to try to contest shots. Inside, the fact that he can't jump is a big problem because when a guard is comming at him he used to let the guy going to the rim without trying to block him or even to take the charge, that thing really got to change if he wants to play. on the positive side he's always sprinting back on D and never take a play off.
He's got a lot of difficulties guarding real PF one on one, he takes a lot of fouls or he's been pushed under the rim and been dunked on.
Rebounding is a big problem too, he's not going at it, I think it's still the same problem, he can't jump so he doesn't try, that got to change too because as you all know rebounding is 50 % effort and timing.
Conclusion : I think he is a good scorer off the bench can stretch the floor can hit big shots. On offense you can see that he got a high IQ he knows where he's got to be what he's got to do. On defense he's still got a lot to learn, how to not foul PF etc. He's got to improve his rebounding and overall D if he wants to have some consistent min.