DJ has said the players have a clearer sense of what they're trying to do and what their roles are have been simplified so looks a bit of they're doing more with less. The CJ/Simpson duo seemed like a total mess, where to an outside observer it seemed unclear who was in charge and making decisions and i'm not sure if CJ has the communication skills required to be the head coach to start with.
So at the very least the players know what they're trying to do gameday and Ninnis has also been smart in getting Humphries more involved in the offence, which has been a great help. He's gone from averaging 12.2 points, 5.5 rebounds, 1.0 block in 22.1 minutes with CJ to averaging 19.7 points, 8.0 rebounds, 1.5 blocks in 27.5 minutes with Ninnis. He had 1 20+ point game in 13 games with CJ to having 5 in 11 games with Ninnis. Just having that added threat has been a huge help to the team.