What's wrong with the Skins' passing game is not a single thing; there are several components. However, please consider the following:
At the end of the 2007 season most folks here thought - correctly - that wide receiver was an area that needed upgrading in the off-season.
CLEARLY, the front office and the coaching staff must have thought it needed a bit of tweaking too because they spent the first three draft picks taking pass-catchers.
It is now December and the WR corps for the 2008 Redskins is the same group of people as for the 2007 Redskins - - the same guys who didn't get it done last year and presented the team with a need to "upgrade".
GRTripp0012 has it right about Moss. He makes a couple of huge gains and a bunch of no gains on his catches. He is the #1 receiver here by default but isn't a great lead receiver. Perhaps he attains the level of "slightly above average".
A big problem is that none of the three rookie pass-catchers has done diddley-squat all season long. So far, Kelly's contribution is that he may drop the highest percentage of passes to hit him in the hands in the history of the NFL. He has made Rod Gardner look like a guy doing an instructional video on how to catch a football.
Until and unless the new guys add something to the pass-catching mix, we are left to deal with Albert Einstein's definition of insanity ...
... doing the same thing over and over again and expecting a different result.