An all out striker will be a great addition, but with how tight the margins have been, that may not be enough, we need all the players to start scoring and have multiple ways to break down stubborn teams. Martinelli has not been scoring as much, Jesus is under-performing and almost all goal contributions are coming from Saka or Havertz, the collective needs to step up.
Sesko should have accepted our proposal though, damn!

I'm still wondering why Arsenal didn't go for an actual striker this season. Sesko, Toney, and Osimhen were all on the market. Kai and Saka cannot propel you to titles on their own ( they're burning too much).The last time we won a major trophy with Tuchel, we had the most players on the score sheet that season; such teams are unplayable.
I think he has done great for his first 10 or so games, but you are right that he needs to be tested against better opponents.
We've won matches we lost last season, out possessed Citeh, scoring for fun. Those are the real tests for me.