Getting Aaron moving off the ball is going to make him that much more of a dangerous player.
I do think however, for him to be utilized to his maximum potential in the PnR, he is going to need to reach a respectable level for 3PT%.
Once this happens, you will see how much it opens up his options once he receives the ball out of the PnR.
If he pops, he can knock down an open three (If he becomes decent), or he can blow by slower opponents going to the rim, dishing, kicking, dunking, finishing.
Not to mention, him having a respectable three ball, will open up lanes for ball handlers in PnR, and create lanes for Gordon to cut as the PF guarding him, will need to be higher in order to close out. Aarons speed is something we need to use to our advantage, with him slipping screens and cutting to the hoop.