you know what, I wouldn't be shocked if Edelman suddenly started going deep. He's got that great turn speed that makes him dangerous, but he's also got really good straight line speed, and you can use his agility in more than 1 way. With Meyers and Bourne handling the midrange stuff. I could see them taking some pressure off Edelman by just sending him in a straight line on a few plays. IIRC we used Welker that way from time to time, and the only reason we haven't done the same with Edelman is he's been so damn productive in the slot role, not because he actually can't do it.
On the other hand, with our current quarterback, I think we're kidding ourselves if we think this team is aiming for deep passes all that often. Cam doesn't have the arm for it. A bunch of WRs to jam up the middle, especially if they bring some size and blocking ability, are a definite asset in the run game.