The Celtics hardly had a pre-season. Especially in terms of getting that starting lineup set. I felt that was Stevens' most important priority--and he missed it.
Instead, he just threw all the money together and started the season with them. Turns out Hayward isn't really ready to start on this team. He should be coming off the bench--at least for a while--where his shot can better be utilized. He looks a step slower right now, and may be affecting the tempo.
The Celtics have a lot of youth and athleticism, and they should be exploiting it more to get easier shots. That should also result in a stronger transition game. They need more selectivity in the 3P shot, and more play in the paint.