Arsenal is better because of Arteta, he's the heart and soul of our club. Tough love and holds his players accountable, its sink or swim and if you fit the mold you will be rewarded. This is how long it takes to really change the direction of one of the biggest sporting clubs in the world in an authentic way.
Could it really be done sooner? The rise of Bukayo Saka, the introduction of The Angel being sung every game. Die hard players who have grown in skill like Gabriel, Saliba and Rice plus many more. Glimpses into the future with MLS and Dowman, these things take time.
Walking away with nothing would be extremely disappointing. If that does happen there's no one else available better suited for the job. Change the players not the manager.