I agree that Brad Smith improving shouldn't cut into Cotchery's numbers, but Smith looks like a real WR to me. I remember one preseason game, he was running full speed and had to stop, completely turn around, avoid the defender and make a play on a way underthrown ball. He did it perfectly.
Smith reminds me of Randle El. Perfect slot reciever/playmaker. He won't steal any time from cotchery or coles though.
Brad Smith will be no more than a Jerome Pathon in this league, can make plays but usually is not noticeable.