As a fan of MG and one who is most familiar with his situation, I can say without a doubt that he will be a much different player next year in terms of his offense. Quite too often we tend to focus on the outcome more than the process.
On Defense
When Gbinije is playing on the perimeter, teams tend to shoot less 3's and penetrate less.
On offense
Unfortunately, Mike is not a player who hunts his shots or force anything unless he has to. In highschool and AAU he was the number 1 option on offense and he delivered when put in the right situations. In his college career so far he does not view himself as an option due to his role on the team. Hence, he tends to be tentative and defers to those for whom the plays are often designed (Fair and Cooney). Gbinije is not a great 3 point shooter like Cooney, but is capable of knocking down 3's when he is open. I have seen in many games when Ennis and Fair would ingnore or not look at Gbinije when he is wide open on the opposite side. I believe if he gets as many opportunities as Cooney, he will make a few more than he has made.
Rebound
The stats clearly show that Mike is not rebounding enough; however, he always seems to be pressuring the ball along the perimeter, contesting shots, covering for slower teammates, and always attemting to blocks shots closer to the basket, which quite often puts him in a disadvantaged rebounding position.