Carrying this out further.... If we don't go inside as much, and don't draw as many fouls, Okpara is likely playing more minutes and defending with more intensity if he is no longer in foul trouble. Does he get 1 more block? Score 1 or 2 more baskets than his replacement?
Having an experienced, high IQ, point guard is essential, IMO, to run the right play based on personnel on the floor and game management factors.