I would take Pledger in a heartbeat, especially if Mills doesn't come back. I'm pretty high on the RBs in general and think they'll shine with health and experience, but they're all young. An experienced back would be nice, and historically this staff has had no problem rotating guys if Thompkins/Morrison/Scott/Johnson break through and earn touches.
People thinking there are better QBs than Martinez in the portal are delusional. Milton was, but coming off a potentially career ending injury is no joke and I don't think he had any interest in being in the midwest.