Apart from very little patience, Chelsea management made a big mistake when appointing Pochettino as Tuchel replacement, they should have seen the situation that occurred at that time from a positive angle. Pochettino is not an accomplished coach, he was often fired due to his inability to handle the club according to management's expectations. When clubs often change coaches, the players have to adapt again to the tactics and strategies used by the new coach. The club will also be greatly disadvantaged by having to pay compensation from the remainder of the coach's contract.
I think you get it wrong. Pochettino wasn't the direct replacement of Tuchel. Chelsea had already appointed two different managerial coaches "Potter and Lampard'' before they appointed Pochettino as the new head coach of Chelsea.
Apart from having little patience, the Chelsea management is very judgemental in making decisions about coaches. I said this because I don't understand why Tuchel was sacked in the first instance when the PL matches haven't gone half with matches played. It's very unfair how Tuchel was sacked by the new owners of Chelsea without giving Tuchel enough time to continue heading to Chelsea.
Enzo Maresca who has just received the trust of Chelsea management, must be able to make Chelsea appear consistent. Management has high hopes for him because he is amazed by the achievements he has just made with Leicester City. His first season in charge of Chelsea may not go as desired because the level of competition in the EPL is very competitive. Management must be patient with Enzo's work because the success or failure of a coach is seen when he enters his second season managing the club.
Forget about Enzo having the trust of Chelsea management. If he didn't get the Chelsea team to the PL top table, he would be sacked like others. I just hope he makes Chelsea to be formidable the way it was during Tuchel's time as head coach of Chelsea.