C's are off to a slow start.  I don't know what will happen the rest of the way but I tend to think we will turn it around but at the very least

Isaiah can play.  He's good enough with the basketball where he is going to score
Marcus can defend
Jaylen Brown is going to be a player and a piece going forward.  I really believe he is reggie lewis type stuff at the minimum
Zeller can't stop or make a layup
Horford will do a variety of things offensively and defensively and share the ball and provide an inside/outside presence when he's healthy
Gerald will have various hairstyles and hit a shot every so often
Bradley will be better than past years but will probably get hurt at some point
Crowder will defend and be steady and probably get hurt at some point
Jerebko will make plays that go unnoticed but probably get outrebounded
Jackson will be as good as Rozier
We have Zizic and Yab stashed
Amir will be here until we trade him or he walks
Ainge will explore most options
Brad will stay calm most of the time