Having a new coach means that a team will have new playing tactics and this will make the team difficult for opponents to predict and analyze. But a new coach will need to adapt and get to know the characteristics and abilities of each player to formulate an effective strategy. This is very relative depending on the ability and chemistry between the coach and players. Some coaches can even immediately award trophies in their first season, such as Di Matteo when he surprisingly succeeded in bringing Chelsea to win the 2012 UCL. But that is very rare because coaches usually need one or two seasons to adapt. I don't have high expectations for Chelsea and Liverpool. I hope Liverpool can remain consistent even without Klopp and Chelsea can improve their ranking with their new coach.