Huh, I'll take your word for it. I guess I just think of him as an outside guy and Moore as a slot guy.
We move them around for matchup reasons. When inside Colston either runs TE routes from the slot, or runs routes as if he were on the outside.
Moore still runs his under routes when outside on most plays.
Adding Austin would give us 3 guys that do pretty much the same thing(Moore and Sproles). Don't really need a 3rd guy like that.
It would be most beneficial to get a burner to rotate with and push Morgan, but another big target outside is never a bad thing. Jump balls to Colston, Graham, and Rookie all day.