I hope Arteta adds a bit more compactness and positional play in this team, based on what he's seen Pep do at City.
At the moment the team looks hopeless in those two areas, half the team presses aggressively whilst the CB's sit deep, or the defense and midfield sits deep and the front 4 do a half arsed press. and you can drive a truck through central midfield.
I'd like to see him encourage the defense to move up, and add more pace/ball playing ability in the back line.