Considering we dont have a clear cut starter and a lot of guys around the same talent level, its only smart to try to maximize every player based on the situation.
Harris had really good vision. The problem for him was, he didnt attack holes, he tip toed them.
Chaney and Knighton dont have that (yet). However, both of their ypc will go up when they run behind a Mirabal and Cristobal coached O-Line.