Is Kompany really the key point. The team has realized that some things have to change. Now they are running into the same problems and I wonder if they will be able to solve those problems. Kane is not the scorer they were hoping for because the scorer they were hoping for scores goals in important games, he doesn't.
I see no way to say that Harry Kane's performance is poor. Harry Kane performed well even though Munich did not win the title last season. And Kane's performance this season is also very good. Kane has 5 goals and 4 assists in 5 Bundesliga games. He also scored four goals in the Champions League. So I don't think there is any weakness in Harry Kane's performance. Bayern Munich won't benefit much from adding Harry Kane's replacement to the squad.
I wouldn't say Bayern Munich lost against Aston Villa with a poor performance. We saw the dominance of Bayern Munich throughout the match. But even then, Munich lost 1-0 in the end. This is Munich's misfortune.