Shields still is not making the hard personnel decisions

We have ten players averaging between 11.2 and 28.2 minutes per game. The low number is too high and the high number is too low. Furthermore, we have seven players averaging at least 21.3 minutes per game. There has to be some differentiation in ability among the top ten and the top seven. Some of the players have to be significantly better than others, and so they should be playing significantly more minutes. I do not care at all who starts; that is purely ceremonial. What I care about is our most effective five being on the floor the most possible minutes, and with the minutes/game pattern we have that cannot be happening.