WR is fine IMO. The best way to help Manning and the offense is to upgrade the running game.
At present, we pose opposing defenses "difficulty" with our passing game. No so much with our running game.
Until such time our running game can be counted on to make defenses respect it as equally as Peyton & our Wr's, we'll see endings in the playoffs similar to that against the Ravens.
This offense is too one dimensional.