I think there are 3 other wing players who could go for 15-20 on any given night. This includes Spencer Johnson, Trevin Knell, and Gideon George.
There are a few of wild cards out there who could appear as a top 3 scorer. Jesse Wade could certainly be a significant scorer if he can get healthy. Gavin Baxter may be given more room to score and use his athleticism. Finally, Hunter Erickson also has potential to be a big contributor.