This is my fouth season of fantasy football. D. Alexander does have to fight off D'Wayne Bates to even start. Ismail is a solid receiver in a good system. I'm a Fins fan, but Gadsden isn't going to put up good fantasy numbers because of his lack of speed and his role in Norv Turner's new system.
I would get rid of Gadsden and pick up another receiver. Look at the Cincy receivers now that the QB situation is taken care of. Gus isn't the greatest QB, but he's stable.