Aside from the super athletic or elite WRs (Larry CJ, Roddy, and a few others), I fully believe that the QB makes the WRs, not the other way around.
I mean, it seems awfully convenient that the Giants regularly have turnover in WRs, and they suffer virtually no drop off. Steve Smith was a 1200 yard receiver one year, he gets hurt the next season, but Mario Manningham steps right in and has almost a 1000 yard season with 9 touchdowns. Coincidence? Well then this year Manningham is the one who has an injury plagued season, and Victor Cruz, some undrafted no name, steps in and has 1500 yards and 9 touchdowns.
Its not just Eli. Look at the Steelers. Last year Mike Wallace breaks out to become a top WR. This year Antonio Brown has 1100 yards. Jordy Nelson had 15 touchdowns this year. Laurent Robinson gets limited playing time in the first 4 weeks of the season. Then Miles Austin gets hurt, and Robinson has 11 touchdowns in the final 12 games of the season. Do you see the huge difference between Rob Gronkowski/Jimmy Graham's numbers and Vernon Davis' numbers? Are they really that much better players than Vern is? Look at what the Colts have done over the years that Peyton has been there. He makes players like Austin Collie, Pierre Garcon, and Brandon Stokely look like Pro Bowlers.
Sorry for the rant. But it just seems like every WR that has jumped from no where to a top WR just happens to play with a top quarterback. If Michael Crabtree played with a good QB, there is no doubt to me that he would be a 1200 yard 10 TD player.
So to answer your question, I think we are still missing that elite, true #1 WR.....but I think with a good QB, our wide receivers would look far more than adequate at the things you just asked me about.