I'd say some of the players you mention started with 'pretty good' seasons before having great ones.
I don't get all this negativity regarding Rodri. He's a different type of player to Fernandinho so it's not his fault that defensively, as a team, we failed last season. Centre backs were a big issue but a failure to press more as a team was just as important.
Also, we lacked build up play, with Laporte being injured and others out of form. So I think there was more pressure on Rodri to get on the ball to get things moving.
In short too much was expected from him in a position that gets a hell of a lot of focus.
With a fit Laporte, and the likes of Ake and Koulibaly there will be less pressure on Rodri both in build up and defensively. Ahead of him we might have more vitality in the press with more game time for Foden and the addition of Torres.
I think Rodri will have a great season.