Who would you like to see excel. Maybe improve the most.

For me Zahore, Morrison, Gunnarsson.

Zahore for obvious reasons.
Morrison, because if he does want to stay despite big money offers then I,d like to see him do well alongside Bamba, who might find it tough to match last season, and Manga who might be as good as we all hope.
Gunners because he deserves a great season.