Arteta is just looking for the right formula for his players, because now Arteta already has many options to rotate players in his main squad, hopefully he can be consistent until the end of the season.
Not sure what other formula you can expect from Arteta next season, but I think he has prepared a good strategy for his team based on needs. Arteta has a sufficient stock of players in his squad list for next season, but regarding performance issues, of course it won't be guaranteed to be as good as expected.
Arsenal are a tough competitor in the Premier League next season and I admit that. But anyway I'm not going to lie about wanting that Manchester City will still remain the favorites in the Premier League next season. Arsenal can certainly threaten at any time, but I hope Manchester City doesn't make too many mistakes in their quest to win 4 titles in 4 consecutive seasons.