Qwiss I think Arteta will want him to simplify his game and make it more efficient and intentional. I reckon he'll be told to dribble less and cut out the flicks and tricks. He's strong and can cross well, I'd imagine these are things Arteta is as keen on as his progressive carries.
You could be describing Martinelli's game relative to his. Crossing and chance creation is exactly what Gabi does more of than Noni.
Unless Arteta has changed his approach to coaching wingers, he's very precise to the point of offering ratios about the emphasis he wants in each player's decision-making (inside versus outside, shoot versus pass, specific passes to make etc).
Probably wants Madueke because he reckons he can squeeze an extra 30% out of him by telling him what to do.