I agree, it's way too early to give up on Pierce. But he definitely needs to develop a mean streak, ala Pittman. MJP is aggressive going for the ball, not waiting for it to come to him.
Also, if you've watched Pittman's YouTube videos you know he hates it when people say he's not fast. He looked pretty fast outrunning a bunch of Jags in game 1.
He's always doubled or bracketed. Hopefully Downs will start drawing more doubles, and we'll get our TEs more involved. But yeah, Pierce definitely has to up his game.