A new OC changes nothing this season. This is the offensive scheme Diaco wanted and it is what you have until the season ends. Changing the OC next year probably has no significant change because of Diaco's basic philosophy, the lack of players to fit a more dynamic scheme and the turmoil of 3 OCs in 3 years.
I think you can look at BC that changed OC after last year. Same type of ineffective offense this year because the head coach has not changed his philosophy. The fired OC Fitch has an O that averages about 40 points and 530 yards per game this year at La Tech. Did he suddenly get more creative or does his new head coach have a philosophy that values high scoring, quick strike offense over a time Of possession and minimizing risk/turnovers point of view?
Diaco has to change his philosophy before there is any improvement or change in the offensive schemes. New bodies do not always result in changes. And nothing suggests to me that he has any intention of changing.