I'm excited to see a hopefully heathy Gordon Hayward. He has a skill set that neither of the J's possess. He see's the floor well, he's a bright defender, a very good passer too, besides being a very good scorer.
I agree with the OP the loss of Horford was huge, this team specifically would have benefited by his well rounded game. I'm hoping Hayward will fill in on the offensive end on what Al would have provided.