If there's a WR who's going undrafted in the majority of leagues, and you go and take him before the final round, then that's NOT good value. Let him sit on the free agent wire and see what happens. There's a gazillion guys who, like Bryant, could go either way this year, up or down. If you miss them in the draft, there's bound to be several more t pick off the wire; several with just as good prospects.
And the bitch of it is: He'll ride your bench even if you do draft him. Then he'll have "a breakout week." You might take a flyer and stick him in your starting roster and, guaranteed, he'll take that opprtunity to enter back into a deep. deep coma.
Murphy's Law. I don't like testing it on guys like Bryant.