Is Cousins Derrick Coleman 2.0?
Possibly ... but hopefully he is just young and undisciplined and will round out his game in time.
Improve that defense and shot selection.
If he can become an average defender (fair likelihood of happening)) and if that shot selection improves to the point where he becomes an efficient scorer (very good chance) ... Cousins will be one heck of a center. Easily a top ten center, possibly top five.
Hopefully, he'll do that. It's very achievable for a guy with his talent.
If he fails to do so, then yeah, Derrick Coleman 2.0.