Graves' new R suggestion

First off, I'm pretty excited about the new Graves and what he will bring to the table. However, there is just one aspect of his kit that takes away from the shotgun "fantasy" in my eyes. "To help him deal with that, Collateral Damage now knocks Graves back substantially, creating a potential escape spell for Graves in exigent circumstances." - This is the line in particular. I feel like this almost gives a sense that Graves is too weak to handle his own shotgun and I have a suggestion as to what might help it.

Collateral damage now knocks Graves' initial target back X units from Graves. If the first target's body hits any enemies on their way back then they don't take any additional damage, but are slowed/stunned/interrupted/knocked up(pick one and it would be a very short duration). If the initial target is at max distance then they are merely interrupted for a brief second. This way the closer the enemy is, the further they will be knocked back to help him escape. It also opens up opportunities to use it for a good engage as well. I'm just spitballing here, but let me know what you all think!