Rose both made Jimmer the POY by giving him complete free reign on offense and what to date has been an NBA bust by not developing him defensively.
Watching Jimmer on D in the NBA has been at times embarrassing. Developing should include the complete player. Rose did the smart thing tactically, and it won him games, but I don't know that I would say it developed Jimmer much. Jimmer developed Jimmer...both the offensive game and defensive got no game. Rose facilitated in both cases.