I would never have had Mount on my wishlist for the window, but he undoubtedly improves the team. He splits the difference between Eriksen, who is good on the ball but can't really run, and Fred, who can run for days but is incredibly inconsistent in possession, as well as offering desperately needed backup/competition for Bruno.
Only a couple of players come out of the Wolves game with any credit, so I'm not going to judge Mount on it. But if they're going to play together, him and Bruno need to get better at checking out what the other is doing and acting accordingly as we got caught out a lot when both had pushed to the edge of the 18 yard box or made a run in behind and Wolves broke into an empty midfield. To be honest though, Garnacho and Rashford having shocking games and giving the ball away constantly had a lot to do with that, as did Casemiro's lack of mobility.