I don't know about others, but I was very happy with his performance and more so during added time.
Fellaini was sort of like a Herrera lite. He was back quite a few times closing down players, was in the box to bring balls down and was also in the midfield to help Pogba and Carrick (both were very good). Zlatan was struggling a bit and was not being able to hold the ball up well but Fellaini did it effortlessly. Passing was also quite good.
During added time, we ended up having a very good combination of height and pace because of the Zlatan injury. We had the height of Pogba and Fellaini and the quickness of Martial, Rashford and Mkhitaryan. With Fellaini there we had enough height and strength in the box that Zlatan was not needed that much. Zlatan is also tall and strong, but he usually tries to use these attributes to mostly finish chances (which of late has not been working out well). Fellaini however, uses his strength to bring others into play, and with pacy players like Martial, Rashford and Mkhi around, this ends up being far more lethal.
Good stuff from him.