Depends. Vardy is an awful fit for the current style of play. However, Arsenal also signed Granit Xhaka, a midfielder known for his long passes and are rumoured to have interest in Ricardo Rodriguez, a left back known for his long passes. A change in style is imminent, maybe? I've long advocated to transition into a counter-attacking style so if it's finally happening, good.
Another good part is that Arsene seems to have finally realized that this team is lacking balls. Both Xhaka and Vardy are a bit hot headed. Wouldn't be surprised if Arsene has the Invincibles in mind. Transition into more direct football and adding some tough players.