He tracked back better in the 2nd half, although he got a bit dirty with Ndidi and could have picked up 2 yellows if the ref had seen him elbow Ndidi on the floor.
I dont think we're playing 4-3-3 and if we did Maddison can easily play in CM. He does more of a CM shift than Grealish who is far more alive with the ball. Even today Maddison had 2 tackles, 2 interceptions and at least one of the interceptions was taking Grealish's pass, while Grealish had 3 tackles and 0 interceptions. I've seen Villa probably 4 or 5 matches this season and this was the second half was the first time he was tracking back, presumably after getting an earful for not doing it in the first half. So its better from him but still not as much