I think it'll even out since, although we may lose some RB production, we might be able to open up the offense a little more since we can rely on Shump, Lee, and Williams' pass blocking much more than JRob's. They allegedly all have better hands than JRob as well (though I personally never saw any evidence JRob was particularly deficient in that area, even making a few circus plays to the contrary), so maybe we'll use more screens and RB's in the passing game.