The man is always moving. Amazing workrate. Also, he and Sanchez combined multiple times against Everton to press high up the pitch and win the ball. He made 5 or 6 lung-busting runs up the pitch in transition as well, and was more often than not ignored (usually by Sanchez). If we could clone him, not only would there always be someone to pass to but there would also be someone who could make the pass.
Biggest issue is he's not great when he's playing in our own half. Same with Alexis. The fact that our forwards have to do so much in our own half in the first place is part of the problem, though.
It's amazing how what is essentially a question of aesthetics can polarize so many. Alexis and Ozil are both absolutely top, top players who I still can't really believe are on the same pitch for Arsenal. And for both, part of the reason why they excel is because they work extremely hard.