I'm not so sure a rookie WR would beat out Crayton, much less Glenn or TO.
Crayton excells in the third WR spot, and always seems to make plays.
I am all in favor of drafting a WR, but I doubt we would see the player all that often this coming year. Think last year with Bobby Carpenter. Groomed behind the starters, sees some special teams play, but isn't even the nickle LB (I only bring up "nickle LB" as a comparison with the "3rd WR"; both aren't starters, but still vital components). Comes in as an injury replacement and shows some flashes for the coming season.
3rd and 21 - 3rd and 15
Dez Bryant the Redskins killer.