I want to touch on one other aspect, and yes, it is related, and yes, it goes a bit deep into the discussion and question. I'm pretty sure 93z saw this discussion, as I seem to recall him posting in that arena. It has to do with Aaron Rodgers and his "growing pains" as an NFL quarterback. I stay clear of this discussion here, because it somehow leads to Brett Favre comparisons by those (imo) that have some ax to grind.
Here is what Brett has/had that Aaron needs to work on. Super quick release. (.3 seconds faster on average than Aaron) Perfect timing in the 3,5 and 7 step drops. Reading all progressions, in effect, seeing the entire field, contrasted with Aaron (probably) seeing about half. He was also critiqued for looking downfield, as contrasted to short field/"check-off" type progressions.
That being said, know that Brett would shuck it when he should not, and Aaaron "takes off" when he probably shouldn't have needed to. I am totally good with a young mobile QB doing that, but that is the critique.
What does that have to do with drafting Crabtree? It has to do with the WR's deeper in the progression. Chances are good that Aaron NEVER SAW THEM in the pattern. You can blame the talent of the WR's, you can blame Aaron Rodgers, or you can blame the lack of pass protection. Given my choices, I blame our offensive line, not because Aaron is the be all, end all, but because he is not. There is only one Brett Favre in my lifetime. Aaron will improve, but not if he is constantly running for his life and either in fear of getting clobbered, or in fact getting clobbered.
Any lack of production by our "other" receivers is PROBABLY due to the youth and inexperience of our QB, exacerbated by a poor performing line. NOT the talent or lack of it in our wide receiver corps.