Only Barcelona have a perfect points so far (9 points from 3 matches), no one would be wrong to expect them to become La Liga champions this season, but that's too soon to say, we haven't even go to the first El Clasico of the season yet, so even though Barcelona are currently having a good run, we can't know how they will be after that.
About Barcelona's match against Rayo Vallecano, I thought Olmo played well, it's a shame he didn't play from the start, maybe if he played earlier we could have seen Barcelona's third and fourth goals.
But after Dani Olmo shows his quality, maybe Hansi Flick will start considering including this player in the starting eleven in the next match. But I am now starting to understand the meaning of Flick's words about wanting to change the Barcelona squad's style of play. And yes, we can see the results now. Hansi Flick has really made a positive change for this team. And managing to collect full points in 3 consecutive weeks is an achievement that currently only Barcelona has had this season in LaLiga. But yeah, it's still too early to judge everything about the teams in La Liga. Because changes often occur throughout the seasons. There are times when a club starts well but ends badly. And there is the opposite, namely the club starts badly but in the end they can get good results at the end of the season. And more surprises will occur throughout the season of course.