Consistency is very important in football. If you are a team aiming for the championship you have to give your best in every game. If Xabi Alonso instills this idea in the team, we can see a much better team and much better football.
Some coaches can bring a lot of positive power to their team. Both the team and the coach need to be in harmony with each other. Xabi Alonso and his team have already achieved this. I think the team's cohesion will increase even more in the upcoming matches.
Bayer Leverkusen matches the same strength with Bayern Munich. You're right, consistency is the only key that will make mediocre club transforming into becoming an elite club. Bayer Leverkusen ranked first this season, they really got some guts to maintain the lead for some weeks. They have one of the best coaches, Xabi Alonso who's not relenting, making sure he knots every area on the pitch. With the present game performance, it will be difficult for any mediocre team to win them, they already know what to expect and they're ready. Xabi Alonso at their peak moment in the present season games.
Bayer Leverkusen is very much ready for Bundesliga I can see it from their performance. From their last game Bayern Munich which is known to be champions of Bundesliga played with Bayer Leverkusen was very tough and the both team showed the same football quality, with the consistency of Bayer Leverkusen it might lead them in getting something big this season. Bundesliga is very much competitive that Bayern Munich may find it very difficult to win the league this season.