To run set plays, you have to have skilled players with high IQ who can handle the ball and ...
Look at the " Most Positive Impact Player" :) :) of Raptor team which is Amir Johnson !!! The guy can not dribble two feet, can not beat his man off the dribble and has passing skills of a 5 year old. you give him the ball and he does not know what to do with it. So all you can is to do pick and roll with him 5 feet from the basket or run fast breaks.
The hustle and energy scrubs that Raptor is full of are not capable of running complicated set plays.