Rozier, Tatum, and Smart are not all much different then career averages (for Tatum, last season is his career), yes down from last season but statistically within the norm. Horford had a ridiculous start to the year last year so he will never match that. He is about where you would expect him to be in my mind. We don't need him taking 3s anyway. If wide open, at the end of the shot clock, sure, but he should be the 5th option to take a 3.
Brown is definitely in a funk or something. I think he is hurt. If that is the case, they should just rest him or play him off the bench or something to flip his script. I still believe in him. I don't buy that last season is some kind of a fluke.
Hayward is a big question. It is not surprising that after a year off and a major injury rehabilitation, that his touch is off some. I think he is looked good. He is quicker than I realized. I always thought of him as a 3 but I think he may be better as a 2. I know, both are wings but there is a little difference. He came off the bench last night. Little surprised it wasn't Brown who came off the bench. Hayward did not have a great game. I think Brown off the bench may be better at this point (things can change).