I have high hopes for Pochettino. We'd know in the next couple of weeks when the PL is in full swing.
There is an expression that order beats class and even with the best players you will not be able to win titles if you do not balance the squad. That is, the conditional stars should have players who will take on the rough work so that the stars are engaged in creativity. I don't quite agree that Pochettino's work will necessarily be visible in a few weeks. Balancing the composition may take half a season and even a season in general, let's recall the example of Arteta. The most important thing is that the club management has patience and trusts the coach.
Yes, I'm aware that it takes time before a new coach or player will settle into a new club. It's very similar to how a new employees settles into his new place of work - I've had that experience so I completely agree with your response and why I said the in next couple of weeks, it could probably be months too. Chelsea's management is not known to be patient enough their their coaches especially if things don't go in their favor so Pochettino needs to keep that in my as he rebuilds the team.